/* ══════════════════════════════════════════════════════════════════════
   Fetia — Guides (Visibilité IA) · feuille partagée
   Design system « Lagon nocturne ». Pages contenu-first : lisibles, rapides,
   citables. Pas de cosmos WebGL ici — le contenu est la vedette.
   ══════════════════════════════════════════════════════════════════════ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
:root{
  --lagon:#2F8F8F;--lagon-profond:#0F6B6B;--corail:#EF6B53;
  --nuit:#06171A;--nuit-2:#0B2429;--neon:#34E6C4;--neon-soft:#7FF0DC;--corail-vif:#FF6B4A;
  --clair:#EAF6F3;--clair-mute:rgba(234,246,243,.62);
  --r:10px;--r-lg:14px;--maxw:1240px;--readw:720px;
  --chamfer:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  --ease:cubic-bezier(.32,.72,0,1);
  --font-display:'Cabinet Grotesk','Satoshi',system-ui,sans-serif;
  --font-body:'Satoshi',system-ui,sans-serif;
  --mono:'Space Mono',ui-monospace,SFMono-Regular,monospace;
}
body{font-family:var(--font-body);font-weight:400;background:var(--nuit);color:var(--clair);line-height:1.65;overflow-x:hidden}
h1,h2,h3,h4,.display{font-family:var(--font-display);font-weight:800;line-height:1.08;letter-spacing:-.025em;color:#fff}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
::selection{background:var(--neon);color:var(--nuit)}
strong,b{color:#fff;font-weight:700}

/* ══ Textures de fond (légères, statiques) ══ */
.grain{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.aura{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(60% 40% at 82% -6%,rgba(52,230,196,.10),transparent 60%),
    radial-gradient(50% 40% at 8% 4%,rgba(255,107,74,.06),transparent 60%)}

/* ══ NAV — îlot de verre flottant ══ */
.nav-wrap{position:fixed;top:0;left:0;right:0;z-index:90;display:flex;justify-content:center;padding:18px 16px;transition:padding .5s var(--ease)}
.nav-wrap.scrolled{padding:10px 16px}
.nav{display:flex;align-items:center;gap:28px;width:min(var(--maxw),100%);padding:11px 12px 11px 24px;
  background:rgba(6,23,26,.55);backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3);
  border:1px solid rgba(234,246,243,.12);border-radius:999px;
  box-shadow:0 1px 0 rgba(234,246,243,.08) inset,0 14px 44px -14px rgba(0,0,0,.65);
  transition:box-shadow .5s var(--ease),background .5s var(--ease),border-color .5s var(--ease)}
.nav-wrap.scrolled .nav{background:rgba(6,23,26,.82);border-color:rgba(52,230,196,.18)}
.brand{font-family:var(--font-display);font-weight:800;font-size:1.2rem;letter-spacing:-.01em;color:#fff;display:flex;align-items:center;margin-right:auto}
.brand .dot{color:var(--corail-vif)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{font-size:.86rem;font-weight:600;color:var(--clair-mute);transition:color .3s var(--ease)}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--clair)}
@media(max-width:720px){.nav-links{display:none}}
.cta{display:inline-flex;align-items:center;gap:10px;padding:11px 14px 11px 20px;clip-path:var(--chamfer);
  background:var(--corail-vif);color:#160a06;font-weight:700;font-size:.82rem;border:none;cursor:pointer;
  transition:transform .4s var(--ease),background .35s var(--ease),filter .4s var(--ease);
  filter:drop-shadow(0 8px 18px rgba(255,107,74,.45))}
.cta:hover{background:#ff7d60;filter:drop-shadow(0 12px 26px rgba(255,107,74,.6))}
.cta:active{transform:scale(.97)}
.cta .ic{width:26px;height:26px;background:rgba(0,0,0,.16);clip-path:polygon(5px 0,100% 0,100% calc(100% - 5px),calc(100% - 5px) 100%,0 100%,0 5px);
  display:grid;place-items:center;font-size:.95rem;line-height:1;transition:transform .45s var(--ease)}
.cta:hover .ic{transform:translate(2px,-1px)}

/* ══ Primitives ══ */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(24px,5vw,60px)}
.wrap{width:100%;max-width:var(--readw);margin:0 auto;padding:0 clamp(24px,5vw,40px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:.62rem;text-transform:uppercase;letter-spacing:.22em;color:var(--neon);
  padding:7px 14px;border-radius:999px;background:rgba(52,230,196,.08);border:1px solid rgba(52,230,196,.22)}
.eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--neon);box-shadow:0 0 9px var(--neon)}
.btn-neon{display:inline-flex;align-items:center;gap:10px;padding:15px 28px;clip-path:var(--chamfer);
  background:var(--corail-vif);color:#160a06;font-weight:700;font-size:.92rem;
  filter:drop-shadow(0 10px 24px rgba(255,107,74,.5));transition:transform .4s var(--ease),filter .4s var(--ease)}
.btn-neon:hover{transform:translateY(-2px);filter:drop-shadow(0 16px 34px rgba(255,107,74,.65))}
.btn-line{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:4px;
  border:1px solid rgba(234,246,243,.3);color:var(--clair);font-weight:600;font-size:.9rem;
  transition:border-color .4s var(--ease),background .4s var(--ease)}
.btn-line:hover{border-color:var(--neon);background:rgba(52,230,196,.08)}

/* ══ ARTICLE — en-tête ══ */
.art{position:relative;z-index:5;padding:calc(96px + 5vw) 0 40px}
.breadcrumb{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--clair-mute);margin-bottom:26px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb a{color:var(--neon);transition:color .3s}
.breadcrumb a:hover{color:var(--neon-soft)}
.breadcrumb .sep{opacity:.4}
.art-head .eyebrow{margin-bottom:22px}
.art-title{font-size:clamp(2.1rem,5.2vw,3.5rem);max-width:16ch}
.art-title .glow{color:var(--neon);text-shadow:0 0 34px rgba(52,230,196,.4)}
.art-dek{margin-top:22px;font-size:clamp(1.05rem,2vw,1.3rem);line-height:1.55;color:var(--clair);max-width:52ch;font-weight:500}
.art-meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px 22px;font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--clair-mute)}
.art-meta b{color:var(--neon-soft);font-weight:400}

/* ══ SIGNATURE — bloc « Réponse courte » (stylé comme une réponse d'IA, citable verbatim) ══ */
.answer{position:relative;margin:40px 0 8px;padding:26px 28px 28px;
  background:linear-gradient(180deg,rgba(52,230,196,.07),rgba(11,36,41,.5));
  border:1px solid rgba(52,230,196,.28);border-left:3px solid var(--neon);
  clip-path:var(--chamfer);border-radius:2px}
.answer::before{content:'';position:absolute;top:0;left:-3px;width:3px;height:0;background:var(--neon-soft);
  box-shadow:0 0 12px var(--neon);animation:answscan 3.4s var(--ease) infinite}
@keyframes answscan{0%{height:0;top:0;opacity:0}12%{opacity:1}60%{height:100%;top:0}100%{height:0;top:100%;opacity:0}}
.answer-label{display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--neon);margin-bottom:12px}
.answer-label .led{width:7px;height:7px;border-radius:50%;background:var(--neon);box-shadow:0 0 9px var(--neon);animation:led 2s steps(1) infinite}
@keyframes led{50%{opacity:.35}}
.answer p{font-size:1.06rem;line-height:1.6;color:#fff;font-weight:500}
.answer p+p{margin-top:12px}

/* ══ PROSE ══ */
.prose{position:relative;z-index:5;padding:24px 0 20px}
.prose h2{font-size:clamp(1.5rem,3vw,2rem);margin:52px 0 4px;padding-top:22px;position:relative}
.prose h2::before{content:'';position:absolute;top:0;left:0;width:44px;height:2px;background:var(--neon);box-shadow:0 0 10px rgba(52,230,196,.6)}
.prose h3{font-size:1.18rem;font-weight:700;margin:34px 0 2px;color:var(--neon-soft)}
.prose p{margin-top:16px;font-size:1.06rem;color:rgba(234,246,243,.9)}
.prose p:first-child{margin-top:20px}
.prose ul,.prose ol{margin:16px 0 4px;padding-left:4px;list-style:none}
.prose li{position:relative;padding-left:28px;margin-top:12px;font-size:1.04rem;color:rgba(234,246,243,.9)}
.prose ul li::before{content:'';position:absolute;left:6px;top:.62em;width:7px;height:7px;background:var(--neon);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);box-shadow:0 0 8px rgba(52,230,196,.5)}
.prose ol{counter-reset:s}
.prose ol li{counter-increment:s}
.prose ol li::before{content:counter(s);position:absolute;left:0;top:.05em;width:20px;height:20px;
  font-family:var(--mono);font-size:.7rem;color:var(--neon);display:grid;place-items:center;
  border:1px solid rgba(52,230,196,.35);border-radius:5px}
.prose a{color:var(--neon);border-bottom:1px solid rgba(52,230,196,.35);transition:border-color .3s,color .3s}
.prose a:hover{color:var(--neon-soft);border-color:var(--neon-soft)}
.prose blockquote{margin:26px 0;padding:6px 0 6px 24px;border-left:2px solid var(--corail-vif);
  font-family:var(--font-display);font-weight:500;font-size:1.25rem;line-height:1.4;color:#fff;letter-spacing:-.01em}
.lead{font-size:1.18rem!important;line-height:1.6;color:var(--clair)!important}
.prose code{font-family:var(--mono);font-size:.88em;padding:2px 7px;border-radius:5px;background:rgba(52,230,196,.1);border:1px solid rgba(52,230,196,.2);color:var(--neon-soft)}

/* Encadré insight */
.callout{margin:32px 0;padding:22px 24px;background:rgba(11,36,41,.6);border:1px solid rgba(234,246,243,.12);
  border-radius:12px;position:relative}
.callout-tag{font-family:var(--mono);font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;color:var(--corail-vif);display:block;margin-bottom:8px}
.callout p{margin-top:0;font-size:1rem;color:rgba(234,246,243,.86)}
.callout.warn{border-color:rgba(255,107,74,.32)}

/* Points-clés */
.takeaways{margin:34px 0;padding:24px 26px;background:linear-gradient(180deg,rgba(52,230,196,.06),transparent);
  border:1px solid rgba(52,230,196,.2);border-radius:14px}
.takeaways h4{font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--neon);font-weight:400;margin-bottom:14px}
.takeaways ul{list-style:none;margin:0;padding:0}
.takeaways li{position:relative;padding-left:26px;margin-top:12px;font-size:1rem;color:rgba(234,246,243,.9)}
.takeaways li::before{content:'→';position:absolute;left:0;top:0;color:var(--neon)}

/* ══ FAQ ══ */
.faq{position:relative;z-index:5;padding:20px 0 8px}
.faq h2{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:8px}
.qa{border-bottom:1px solid rgba(234,246,243,.1)}
.qa summary{cursor:pointer;list-style:none;padding:20px 40px 20px 0;position:relative;font-family:var(--font-display);font-weight:700;font-size:1.08rem;color:#fff;transition:color .3s}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:'+';position:absolute;right:4px;top:18px;font-family:var(--mono);font-size:1.4rem;color:var(--neon);transition:transform .3s var(--ease)}
.qa[open] summary::after{transform:rotate(45deg)}
.qa summary:hover{color:var(--neon-soft)}
.qa .qa-body{padding:0 0 20px;font-size:1.02rem;color:rgba(234,246,243,.86)}
.qa .qa-body p+p{margin-top:12px}

/* ══ Guides liés ══ */
.related{position:relative;z-index:5;padding:8px 0 20px}
.related h4{font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--clair-mute);margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.rel-card{display:block;padding:20px 22px;background:rgba(11,36,41,.5);border:1px solid rgba(234,246,243,.1);border-radius:12px;transition:border-color .35s var(--ease),transform .35s var(--ease),background .35s}
.rel-card:hover{border-color:rgba(52,230,196,.4);transform:translateY(-3px);background:rgba(11,36,41,.8)}
.rel-card .k{font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--neon);display:block;margin-bottom:9px}
.rel-card .t{font-family:var(--font-display);font-weight:700;font-size:1.02rem;color:#fff;line-height:1.25}
.rel-card .arr{margin-top:14px;color:var(--neon);font-size:.9rem}

/* ══ CTA band ══ */
.cta-band{position:relative;z-index:5;margin:24px 0 0}
.cta-inner{background:linear-gradient(140deg,rgba(52,230,196,.1),rgba(11,36,41,.7));
  border:1px solid rgba(52,230,196,.28);border-radius:20px;padding:clamp(30px,5vw,52px);text-align:center;position:relative;overflow:hidden}
.cta-inner::before{content:'';position:absolute;inset:0;background:radial-gradient(60% 90% at 50% -20%,rgba(52,230,196,.14),transparent 70%);pointer-events:none}
.cta-inner h3{font-size:clamp(1.5rem,3.4vw,2.2rem);max-width:20ch;margin:0 auto}
.cta-inner p{margin:16px auto 26px;max-width:44ch;color:var(--clair-mute);font-size:1.02rem}
.cta-inner .btn-neon{position:relative}

/* ══ HUB (guides/index) ══ */
.hub-head{position:relative;z-index:5;padding:calc(110px + 4vw) 0 10px}
.hub-head h1{font-size:clamp(2.3rem,6vw,4rem);max-width:15ch;margin-top:22px}
.hub-head .art-dek{max-width:56ch}
.hub-grid{position:relative;z-index:5;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;padding:44px 0 20px}
.gcard{position:relative;display:flex;flex-direction:column;padding:28px 28px 26px;min-height:230px;
  background:linear-gradient(180deg,rgba(11,36,41,.7),rgba(6,23,26,.5));
  border:1px solid rgba(234,246,243,.11);border-radius:16px;overflow:hidden;
  transition:border-color .4s var(--ease),transform .4s var(--ease)}
.gcard::after{content:'';position:absolute;inset:0;background:radial-gradient(70% 60% at 100% 0,rgba(52,230,196,.12),transparent 60%);opacity:0;transition:opacity .4s}
.gcard:hover{border-color:rgba(52,230,196,.4);transform:translateY(-4px)}
.gcard:hover::after{opacity:1}
.gcard.pilier{border-color:rgba(52,230,196,.3);background:linear-gradient(180deg,rgba(52,230,196,.09),rgba(6,23,26,.6))}
.gcard .k{font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--neon);margin-bottom:auto}
.gcard h2{font-size:1.4rem;line-height:1.15;margin:16px 0 10px;position:relative;z-index:1}
.gcard p{font-size:.96rem;color:var(--clair-mute);line-height:1.5;position:relative;z-index:1}
.gcard .go{margin-top:18px;font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--neon);position:relative;z-index:1;display:inline-flex;gap:8px;align-items:center}
.gcard:hover .go{color:var(--neon-soft)}

/* ══ FOOTER ══ */
.site-footer{position:relative;z-index:5;background:rgba(4,18,26,.85);color:rgba(234,241,240,.7);padding:60px 0 38px;border-top:1px solid rgba(52,230,196,.12);margin-top:80px}
.foot-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand{font-family:var(--font-display);font-size:1.6rem;font-weight:600;color:#fff}
.foot-brand .dot{color:var(--corail-vif)}
.foot-tag{margin-top:10px;font-size:.9rem;max-width:36ch;line-height:1.6}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-col h5{font-size:.68rem;text-transform:uppercase;letter-spacing:.14em;color:rgba(234,241,240,.5);margin-bottom:14px;font-weight:600}
.foot-col a{display:block;font-size:.9rem;color:rgba(234,241,240,.78);padding:5px 0;transition:color .3s var(--ease)}
.foot-col a:hover{color:#fff}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:.8rem;color:rgba(234,241,240,.5)}

/* ══ Consentement ══ */
.consent{position:fixed;left:18px;right:18px;bottom:18px;z-index:120;display:flex;justify-content:center;pointer-events:none}
.consent[hidden]{display:none}
.consent-card{pointer-events:auto;max-width:560px;background:rgba(8,22,26,.96);border:1px solid rgba(52,230,196,.35);border-radius:14px;padding:18px 20px;box-shadow:0 18px 50px rgba(0,0,0,.5);backdrop-filter:blur(8px)}
.consent-card .ctag{font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;color:var(--neon);opacity:.85}
.consent-card p{font-size:.84rem;color:var(--clair-mute);line-height:1.55;margin:8px 0 14px}
.consent-actions{display:flex;gap:10px;flex-wrap:wrap}
.consent-actions button{cursor:pointer;font:inherit;font-size:.82rem;font-weight:600;border-radius:10px;padding:10px 18px;border:1px solid transparent;transition:transform .25s var(--ease)}
.consent-actions button:hover{transform:translateY(-1px)}
.consent-actions #consentYes{background:var(--neon);color:var(--nuit)}
.consent-actions #consentNo{background:transparent;color:var(--clair);border-color:rgba(234,246,243,.3)}

/* ══ Reveal au scroll ══ */
[data-animate]{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js [data-animate].in,html:not(.js) [data-animate]{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .answer::before,.answer-label .led{animation:none}
  [data-animate]{opacity:1!important;transform:none!important;transition:none}
}