/* Snowtrac V2 : la nuit, le froid, l'urgence. Couleurs du logo uniquement.
   Le bleu ne porte pas de petit texte sur blanc (2,4:1) : sur fond sombre oui (7,5:1),
   sur blanc on prend le meme bleu assombri #1F76AC (5:1). */
:root{
  --nuit:#141A21; --nuit-2:#1D242C; --encre:#262B31; --encre-2:#4D5560; --encre-3:#7C858F;
  --blanc:#FFFFFF; --glace:#F4F7FA; --filet:#DDE3E9;
  --bleu:#4FB0E8; --bleu-txt:#1F76AC; --bleu-nuit:#0D6FA8;
  --maxw:1240px;
  --d:'Plus Jakarta Sans',system-ui,sans-serif;
  --b:'Hanken Grotesk',system-ui,sans-serif;
  --m:'Space Mono',ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;border-radius:0;box-shadow:none}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--blanc);color:var(--encre);font-family:var(--b);font-size:16px;line-height:1.62}
img,svg,video{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:24px}
h1,h2,h3{font-family:var(--d);font-weight:800;letter-spacing:-.025em;line-height:1.04;margin:0}
h1{font-size:clamp(2.5rem,1.5rem + 4.2vw,5rem)}
h2{font-size:clamp(1.9rem,1.2rem + 2.6vw,3.2rem)}
h3{font-size:1.12rem;letter-spacing:-.01em;line-height:1.28}
p{margin:14px 0 0}

/* --- en-tete, sombre, colle au heros --- */
.hdr{background:var(--nuit);border-bottom:1px solid rgba(255,255,255,.10);position:sticky;top:0;z-index:30}
.hdr-in{display:flex;align-items:center;gap:22px;min-height:66px;flex-wrap:wrap;padding-block:10px}
.hdr img{height:26px;width:auto}
.nav{display:flex;gap:24px;flex-wrap:wrap;margin-left:auto;font-size:14.5px}
.nav a{color:#AEB7C0;text-decoration:none;padding-block:5px;border-bottom:2px solid transparent}
.nav a:hover{color:#fff}
.nav a[aria-current=page]{color:#fff;border-bottom-color:var(--bleu)}

/* --- boutons --- */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--b);font-weight:700;font-size:15px;
     padding:14px 24px;text-decoration:none;border:2px solid transparent;transition:background .15s,color .15s}
.btn-p{background:var(--bleu);color:var(--nuit)}
.btn-p:hover{background:#fff}
.btn-f{border-color:rgba(255,255,255,.45);color:#fff}
.btn-f:hover{background:#fff;color:var(--nuit)}
.btn-s{border-color:var(--encre);color:var(--encre)}
.btn-s:hover{background:var(--encre);color:#fff}

/* --- heros photo --- */
.hero{position:relative;background:var(--nuit);color:#fff;overflow:hidden;border-bottom:1px solid rgba(255,255,255,.1)}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.85}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,26,33,.93) 0%,rgba(20,26,33,.68) 42%,rgba(20,26,33,.12) 100%)}
.hero-in{position:relative;z-index:2;padding-block:clamp(72px,4rem + 7vw,148px)}
.hero h1{max-width:16ch;text-shadow:0 2px 30px rgba(0,0,0,.35)}
.hero .lead{color:#D6DDE4;font-size:clamp(1.02rem,.95rem + .45vw,1.26rem);max-width:52ch;margin-top:26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}
.eyebrow{font-family:var(--m);font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:#93A0AC;margin:0 0 22px}
.eyebrow b{color:var(--bleu);font-weight:400;margin-right:12px}
/* bandeau de donnees sous le heros */
.jauges{position:relative;z-index:2;background:rgba(13,17,22,.86);backdrop-filter:blur(2px);border-top:1px solid rgba(255,255,255,.12)}
.jauges .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;padding:0 24px}
.jauge{padding:22px 0}
.jauge dt{font-family:var(--m);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:#7F8B96;margin:0}
.jauge dd{margin:9px 0 0;font-family:var(--d);font-weight:800;font-size:1.5rem;color:#fff;letter-spacing:-.02em}
.jauge dd small{font-size:.86rem;font-weight:600;color:var(--bleu);margin-left:6px;letter-spacing:0}

/* --- sections --- */
section{border-bottom:1px solid var(--filet)}
.pad{padding-block:clamp(60px,3.5rem + 3.5vw,104px)}
.tete{max-width:62ch}
.tete .lead{color:var(--encre-2);font-size:clamp(1rem,.95rem + .35vw,1.16rem);margin-top:18px}
.sombre{background:var(--nuit);color:#fff;border-bottom:1px solid var(--nuit)}
.sombre h2,.sombre h3{color:#fff}
.sombre .lead,.sombre p{color:#C3CCD5}
.sombre .eyebrow{color:#8B97A3}

/* --- griefs (liste du probleme) --- */
.griefs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin-top:44px;
  border-top:1px solid rgba(255,255,255,.14)}
.grief{padding:24px 26px 24px 0;border-bottom:1px solid rgba(255,255,255,.14);display:grid;
  grid-template-columns:44px 1fr;gap:14px;align-items:start}
.grief span{font-family:var(--m);font-size:12px;color:var(--bleu);padding-top:3px}
.grief p{margin:0;color:#C3CCD5;font-size:15px}

/* --- frise d'une nuit --- */
.frise{margin-top:52px;border-left:2px solid var(--bleu);padding-left:0}
.frise-item{display:grid;grid-template-columns:104px 1fr;gap:26px;padding:22px 0 22px 26px;
  border-bottom:1px solid var(--filet)}
.frise-item:first-child{border-top:1px solid var(--filet)}
.frise-h{font-family:var(--m);font-size:13px;color:var(--bleu-txt);letter-spacing:.06em;padding-top:2px}
.frise-item h3{margin-bottom:4px}
.frise-item p{margin:0;color:var(--encre-2);font-size:14.6px}

/* --- cartes --- */
.cartes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--filet);}
.cartes-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.cartes{
  border-top:1px solid var(--encre);border-bottom:1px solid var(--filet);margin-top:48px}
.carte{background:#fff;padding:32px 30px 36px;display:flex;flex-direction:column}
.carte .n{font-family:var(--m);font-size:11px;letter-spacing:.14em;color:var(--bleu-txt);font-weight:700}
.carte h3{margin-top:18px}
.carte p{color:var(--encre-2);font-size:14.6px}
.sombre .cartes{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.22)}
.sombre .carte{background:var(--nuit-2)}
.sombre .carte .n{color:var(--bleu)}

/* --- bandeau photo --- */
.bandeau{position:relative;background:var(--nuit);color:#fff;border-bottom:1px solid var(--nuit);overflow:hidden}
.bandeau img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.bandeau::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,26,33,.55),rgba(20,26,33,.9))}
.bandeau .wrap{position:relative;z-index:2;padding-block:clamp(64px,4rem + 4vw,120px)}
.bandeau blockquote{margin:0;max-width:24ch;font-family:var(--d);font-weight:800;font-size:clamp(1.7rem,1.1rem + 2.4vw,2.9rem);
  line-height:1.08;letter-spacing:-.025em}
.bandeau .sign{font-family:var(--m);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--bleu);margin-top:26px}

/* --- detail des fonctions --- */
.fonction{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:54px;padding-block:46px;
  border-top:1px solid var(--filet);align-items:start}
.fonction:first-of-type{border-top:0}
.fonction .cle{font-family:var(--m);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--bleu-txt)}
.fonction h3{font-size:1.5rem;margin-top:14px}
.fonction p{color:var(--encre-2)}
.fonction .points{margin:16px 0 0;padding:0;list-style:none}
.fonction .points li{position:relative;padding-left:22px;margin-top:10px;color:var(--encre-2);font-size:14.6px}
.fonction .points li::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:2px;background:var(--bleu)}

/* --- bordereau (exports) --- */
.bordereau{margin-top:44px;border:1px solid var(--filet);background:#fff;font-family:var(--m);font-size:12.5px}
.bordereau .ligne{display:grid;grid-template-columns:1.6fr 1fr .8fr .8fr;gap:16px;padding:13px 18px;border-bottom:1px solid var(--filet)}
.bordereau .ligne:last-child{border-bottom:0}
.bordereau .tete-l{background:var(--glace);color:var(--encre-3);letter-spacing:.12em;text-transform:uppercase;font-size:10.5px}
.bordereau .val{color:var(--bleu-txt)}

/* --- appel final --- */
.final{background:var(--glace)}
.final .wrap{padding-block:clamp(56px,3.5rem + 3vw,92px);text-align:center}
.final h2{max-width:18ch;margin-inline:auto}
.final p{color:var(--encre-2);max-width:56ch;margin-inline:auto}
.final .hero-actions{justify-content:center}

/* --- formulaire --- */
#demo-form{margin-top:22px;max-width:560px}
#demo-form label{display:block;font-size:13px;font-weight:700;color:var(--encre);margin-top:16px}
#demo-form .req{color:var(--encre-3);font-weight:400}
#demo-form input,#demo-form textarea{width:100%;font:inherit;font-size:15px;padding:12px 14px;margin-top:7px;
  border:1px solid var(--filet);background:#fff;color:var(--encre)}
#demo-form input:focus,#demo-form textarea:focus{outline:2px solid var(--bleu);outline-offset:-1px}
#demo-form .duo{display:grid;grid-template-columns:1fr 1fr;gap:16px}
#demo-form button{margin-top:26px;cursor:pointer}
#demo-form button[disabled]{opacity:.55;cursor:progress}
.df-note{font-size:12.5px;color:var(--encre-3);margin-top:14px}
.df-msg{font-size:14.5px;margin-top:16px}
.df-msg.ok{color:#14603A;background:#E9F3ED;border-left:3px solid #14603A;padding:12px 14px}
.df-msg.ko{color:#8A2A2F;background:#F6ECEC;border-left:3px solid #8A2A2F;padding:12px 14px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* --- pied --- */
.ftr{background:var(--nuit);color:#9DA7B1;font-size:14px}
.ftr .wrap{padding-block:52px}
.ftr-haut{display:flex;gap:40px;flex-wrap:wrap;justify-content:space-between;align-items:flex-start}
.ftr img{height:24px}
.ftr-liens{display:flex;gap:28px;flex-wrap:wrap}
.ftr a{color:#9DA7B1;text-decoration:none;border-bottom:1px solid transparent}
.ftr a:hover{color:#fff;border-bottom-color:var(--bleu)}
.ftr-bas{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:flex;gap:18px;
  justify-content:space-between;flex-wrap:wrap;font-size:12.5px;color:#76818C}

/* --- texte long --- */
.texte{max-width:74ch}
.texte h2{margin-top:46px;font-size:1.4rem}
.texte p,.texte li{color:var(--encre-2);font-size:15px}
.texte ul{padding-left:20px}

@media (max-width:980px){
  .fonction{grid-template-columns:1fr;gap:20px}
  .cartes,.cartes-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .jauges .wrap{grid-template-columns:repeat(2,1fr);gap:0 24px}
  .griefs{grid-template-columns:1fr}
}
@media (max-width:640px){
  .hdr-in{justify-content:center;text-align:center}
  .nav{margin-left:0;justify-content:center;gap:16px;width:100%;order:3;font-size:13.5px}
  .cartes,.cartes-4{grid-template-columns:1fr}
  .frise-item{grid-template-columns:76px 1fr;gap:14px;padding-left:18px}
  .bordereau .ligne{grid-template-columns:1fr 1fr;gap:8px;font-size:11.5px}
  .hero::after{background:linear-gradient(180deg,rgba(20,26,33,.72),rgba(20,26,33,.94))}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}