/* ============================================================
   Space Sparks · Préparer votre formation IA
   Page autonome, dans le registre du site vitrine : style
   typographique suisse sur ciel profond, accent or d'étincelle.
   Les jetons et les composants de formulaire reprennent ceux de
   index.html afin que la page puisse rejoindre le site telle quelle.
   ============================================================ */

:root{
  --ink:        oklch(0.135 0.022 268);
  --ink-2:      oklch(0.185 0.026 268);
  --ink-3:      oklch(0.245 0.028 268);
  --ivory:      oklch(0.965 0.010 85);
  --ivory-2:    oklch(0.915 0.014 85);
  --muted:      oklch(0.735 0.018 268);
  --faint:      oklch(0.545 0.022 268);
  --spark:      oklch(0.835 0.155 78);
  --spark-hot:  oklch(0.905 0.115 92);
  --spark-deep: oklch(0.585 0.135 62);
  --spark-solid: var(--spark);
  --on-spark:   oklch(0.19 0.03 70);
  --error:      oklch(0.685 0.180 25);
  --valid:      oklch(0.760 0.140 158);
  --line:       color-mix(in oklch, var(--ivory) 13%, transparent);
  --line-soft:  color-mix(in oklch, var(--ivory) 7%, transparent);
  --font: 'Archivo', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-titre: 'Familjen Grotesk', 'Archivo', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --gut: clamp(20px, 5vw, 72px);
  --max: 1320px;
  color-scheme: dark;
}

*,*::before,*::after{ box-sizing: border-box; }
[hidden]{ display: none !important; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior: auto; } }

body{
  margin: 0;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- Ciel ---------- */
.aura{
  position: fixed;
  z-index: 0;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(90px);
}
.aura--a{
  top: -18vh; right: -12vw;
  width: 62vw; height: 62vw;
  background: radial-gradient(circle, color-mix(in oklch, var(--spark) 16%, transparent), transparent 66%);
  opacity: .55;
}
.aura--b{
  top: 118vh; left: -22vw;
  width: 70vw; height: 70vw;
  background: radial-gradient(circle, oklch(0.5 0.13 268 / .3), transparent 68%);
  opacity: .7;
}
#sky{
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.shell{ position: relative; z-index: 1; }
.wrap{
  width: min(100% - var(--gut) * 2, var(--max));
  margin-inline: auto;
}

/* ---------- Typographie ---------- */
.display{
  font-family: var(--font-titre);
  font-weight: 700;
  letter-spacing: -0.036em;
  line-height: 0.92;
  margin: 0;
  text-wrap: balance;
}
.h-sub{
  font-family: var(--font-titre);
  font-size: clamp(1.4rem, 2.6vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.12;
  margin: 0;
}
.lead{
  font-size: clamp(1.12rem, 1.65vw, 1.5rem);
  line-height: 1.52;
  color: var(--ivory);
  max-width: 34ch;
  margin: 0;
  letter-spacing: -0.012em;
}
.body{ max-width: 62ch; color: var(--muted); margin: 0; }
.label{
  font-size: 0.7rem;
  font-weight: 600;
  font-stretch: 86%;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0;
}
.label--spark{ color: var(--spark); }
.numeral{
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  font-stretch: 74%;
  line-height: 0.8;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1px color-mix(in oklch, var(--ivory) 26%, transparent);
  display: block;
}

/* ---------- Barre de navigation ---------- */
.nav{
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  border-bottom: 1px solid transparent;
  transition: background-color .4s linear, border-color .4s linear;
}
.nav.is-stuck{
  background: color-mix(in oklch, var(--ink) 82%, transparent);
  border-bottom-color: var(--line-soft);
  backdrop-filter: blur(14px);
}
.nav__in{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}
.mark{
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: var(--ivory);
}
.mark__glyph{ width: 15px; height: 15px; flex: none; color: var(--spark); }
.mark__text{
  font-family: var(--font-titre);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.19em;
  text-transform: uppercase;
}
.nav__links{ display: flex; gap: clamp(14px, 2vw, 30px); align-items: center; }
.nav__link{
  font-size: 0.78rem;
  font-weight: 500;
  font-stretch: 92%;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 0;
  transition: color .28s var(--ease);
}
.nav__link:hover{ color: var(--ivory); }
.progress{
  position: absolute;
  left: 0; bottom: -1px;
  height: 1px;
  width: 100%;
  transform: scaleX(var(--sp, 0));
  transform-origin: left;
  background: linear-gradient(90deg, var(--spark-deep), var(--spark));
  transition: transform .4s var(--ease);
}

/* ---------- Boutons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 11px 20px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  font-stretch: 96%;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--ivory);
  background: transparent;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: color .35s var(--ease), border-color .35s var(--ease);
}
.btn::before{
  content: '';
  position: absolute;
  inset: 0;
  background: var(--spark-solid);
  transform: translateY(101%);
  transition: transform .5s var(--ease);
}
.btn > *{ position: relative; z-index: 1; }
.btn:hover{ color: var(--on-spark); border-color: var(--spark-solid); }
.btn:hover::before{ transform: translateY(0); }
.btn:focus-visible{ outline: 2px solid var(--spark); outline-offset: 3px; }
.btn__dot{
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--spark);
  transition: background-color .35s var(--ease);
}
.btn:hover .btn__dot{ background: var(--on-spark); }
.btn--lg{ padding: 16px 28px; font-size: 0.95rem; }
.btn--solid{
  background: var(--spark-solid);
  border-color: var(--spark-solid);
  color: var(--on-spark);
}
.btn--solid::before{ background: var(--ivory); }
.btn--solid .btn__dot{ background: var(--on-spark); }
.btn--solid:hover{ color: var(--ink); }
.btn--solid:hover .btn__dot{ background: var(--spark-solid); }
.btn.is-occupe{ pointer-events: none; opacity: .8; }
.btn.is-occupe .btn__dot{ animation: pouls .9s ease-in-out infinite; }
@keyframes pouls{
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(.4); opacity: .35; }
}

/* ---------- Ouverture ---------- */
.hero{
  padding-block: clamp(130px, 18vh, 200px) clamp(40px, 6vw, 70px);
}
.hero__title{
  font-size: clamp(2.6rem, 7vw, 6.4rem);
  margin: 18px 0 clamp(26px, 4vw, 46px);
}
.hero__grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: clamp(30px, 5vw, 76px);
  align-items: start;
}
.repères{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}
.repères li{
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 15px 0;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.95rem;
}
.repères li:last-child{ border-bottom: 1px solid var(--line-soft); }
.repères b{
  font-size: 0.72rem;
  font-weight: 600;
  font-stretch: 86%;
  letter-spacing: 0.14em;
  color: var(--spark);
}

/* ---------- Corps : sommaire et chapitres ---------- */
.corps{
  display: grid;
  grid-template-columns: minmax(0, 0.34fr) minmax(0, 1fr);
  gap: clamp(30px, 5vw, 80px);
  align-items: start;
  padding-bottom: clamp(80px, 12vh, 150px);
}
.sommaire{
  position: sticky;
  top: 92px;
  display: grid;
  gap: 18px;
}
.sommaire__liste{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--line);
}
.sommaire__liste a{
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  transition: color .28s var(--ease);
}
.sommaire__liste a:hover,
.sommaire__liste a.is-active{ color: var(--ivory); }
.sommaire__liste a span:first-child{
  font-size: 0.68rem;
  font-weight: 600;
  font-stretch: 86%;
  letter-spacing: 0.14em;
  color: var(--faint);
  transition: color .28s var(--ease);
}
.sommaire__liste a.is-active span:first-child{ color: var(--spark); }
.sommaire__coche{
  width: 8px; height: 8px;
  border-radius: 50%;
  border: 1px solid color-mix(in oklch, var(--ivory) 30%, transparent);
  transform: translateY(-1px);
  transition: background-color .28s var(--ease), border-color .28s var(--ease);
}
.is-rempli .sommaire__coche{ background: var(--spark); border-color: var(--spark); }
.sommaire__compte{
  margin: 0;
  font-size: 0.82rem;
  color: var(--faint);
}
.sommaire__compte b{ color: var(--ivory); font-weight: 600; }
.sommaire__jauge{
  height: 1px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}
.sommaire__jauge::after{
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--spark-deep), var(--spark));
  transform: scaleX(var(--part, 0));
  transform-origin: left;
  transition: transform .5s var(--ease);
}

.form{ display: grid; gap: clamp(56px, 8vw, 96px); }
.chapitre{
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  scroll-margin-top: 92px;
}
.chapitre__tete{
  display: grid;
  grid-template-columns: minmax(0, 0.3fr) minmax(0, 1fr);
  gap: clamp(18px, 3vw, 40px);
  align-items: start;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.chapitre__id{ display: flex; flex-direction: column; gap: 12px; }
.chapitre__texte{ display: grid; gap: 12px; }
.chapitre__titre{
  font-family: var(--font-titre);
  font-size: clamp(1.5rem, 2.8vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.028em;
  line-height: 1.05;
  margin: 0;
  text-wrap: balance;
}
.chapitre__corps{
  display: grid;
  gap: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: clamp(22px, 3vw, 34px);
  background: color-mix(in oklch, var(--ink-2) 55%, transparent);
  backdrop-filter: blur(8px);
}
.form__row{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.form__row--3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.field{ display: grid; gap: 8px; }
.field__label{
  font-size: 0.7rem;
  font-weight: 600;
  font-stretch: 86%;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: baseline;
  flex-wrap: wrap;
}
.field__label em{
  font-style: normal;
  letter-spacing: 0.08em;
  color: var(--faint);
  font-weight: 500;
}
.field__question{
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ivory);
  max-width: 62ch;
}
.field__aide{
  margin: 0;
  font-size: 0.86rem;
  color: var(--faint);
  max-width: 62ch;
}
.field__input{
  width: 100%;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ivory);
  background: color-mix(in oklch, var(--ivory) 4%, transparent);
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 13px 15px;
  min-height: 46px;
  transition: border-color .22s var(--ease), background-color .22s var(--ease), box-shadow .22s var(--ease);
}
.field__input::placeholder{ color: var(--faint); }
.field__input:focus{
  outline: none;
  border-color: var(--spark);
  background: color-mix(in oklch, var(--ivory) 7%, transparent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--spark) 24%, transparent);
}
.field__input--zone{ resize: vertical; min-height: 120px; line-height: 1.6; }
select.field__input{
  appearance: none;
  padding-right: 40px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%23a4a9b5' stroke-width='1.6' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 15px center;
  cursor: pointer;
}
select.field__input option{ background: var(--ink-2); color: var(--ivory); }
input[type="number"].field__input{ max-width: 180px; }

/* Pastilles à choix multiples ou uniques */
.choix{ border: 0; margin: 0; padding: 0; display: grid; gap: 11px; }
.choix__liste{ display: flex; flex-wrap: wrap; gap: 8px; }
.choix__item{
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 17px 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  transition: color .22s var(--ease), background-color .22s var(--ease), border-color .22s var(--ease);
}
.choix__item:hover{ color: var(--ivory); border-color: color-mix(in oklch, var(--ivory) 28%, transparent); }
.choix__item input{ position: absolute; width: 1px; height: 1px; margin: 0; opacity: 0; pointer-events: none; }
.choix__marque{
  flex: none;
  display: grid;
  place-items: center;
  width: 17px; height: 17px;
  border-radius: 5px;
  border: 1.5px solid color-mix(in oklch, var(--ivory) 30%, transparent);
  transition: background-color .22s var(--ease), border-color .22s var(--ease);
}
.choix__marque::after{
  content: '';
  width: 4px; height: 8px;
  border: solid transparent;
  border-width: 0 2px 2px 0;
  transform: translateY(-1px) rotate(45deg);
  transition: border-color .22s var(--ease);
}
.choix__marque--rond{ border-radius: 50%; }
.choix__marque--rond::after{ width: 7px; height: 7px; border: 0; border-radius: 50%; transform: none; background: transparent; }
.choix__item:has(input:checked){
  color: var(--on-spark);
  background: var(--spark-solid);
  border-color: var(--spark-solid);
  font-weight: 600;
}
.choix__item:has(input:checked) .choix__marque{ background: var(--on-spark); border-color: var(--on-spark); }
.choix__item:has(input:checked) .choix__marque::after{ border-color: var(--spark-solid); }
.choix__item:has(input:checked) .choix__marque--rond::after{ background: var(--spark-solid); }
.choix__item:has(input:focus-visible){ outline: 2px solid var(--spark); outline-offset: 3px; }

/* Cartes à choix, pour les trois niveaux */
.cartes{ display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.carte{
  position: relative;
  display: grid;
  gap: 10px;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  cursor: pointer;
  color: var(--muted);
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}
.carte:hover{ border-color: color-mix(in oklch, var(--ivory) 28%, transparent); }
.carte input{ position: absolute; width: 1px; height: 1px; margin: 0; opacity: 0; pointer-events: none; }
.carte__num{ font-size: 0.68rem; font-weight: 600; letter-spacing: 0.14em; color: var(--spark); }
.carte__titre{ font-family: var(--font-titre); font-size: 1.1rem; font-weight: 600; color: var(--ivory); line-height: 1.2; }
.carte__texte{ font-size: 0.86rem; line-height: 1.5; margin: 0; }
.carte:has(input:checked){
  border-color: var(--spark);
  background: color-mix(in oklch, var(--spark) 9%, transparent);
}
.carte:has(input:focus-visible){ outline: 2px solid var(--spark); outline-offset: 3px; }

/* Curseur théorie / pratique */
.curseur{ display: grid; gap: 10px; }
.curseur__bornes{
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--faint);
}
.curseur__valeur{ color: var(--spark); font-weight: 600; }
input[type="range"].curseur__input{
  width: 100%;
  appearance: none;
  height: 2px;
  background: linear-gradient(90deg, var(--spark) var(--v, 60%), var(--line) var(--v, 60%));
  border-radius: 2px;
  outline: none;
  margin: 12px 0;
}
input[type="range"].curseur__input::-webkit-slider-thumb{
  appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--spark);
  border: 3px solid var(--ink);
  box-shadow: 0 0 0 1px var(--spark);
  cursor: pointer;
}
input[type="range"].curseur__input::-moz-range-thumb{
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--spark);
  border: 3px solid var(--ink);
  box-shadow: 0 0 0 1px var(--spark);
  cursor: pointer;
}
input[type="range"].curseur__input:focus-visible{ outline: 2px solid var(--spark); outline-offset: 6px; }

/* Fautes */
.field--faute .field__input{
  border-color: var(--error);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--error) 20%, transparent);
}
.field__faute{
  margin: 0;
  font-size: 0.82rem;
  color: var(--error);
  display: flex;
  gap: 7px;
  align-items: baseline;
}
.field__faute::before{
  content: '!';
  flex: none;
  width: 15px; height: 15px;
  border-radius: 50%;
  border: 1px solid currentColor;
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 13px;
  text-align: center;
  transform: translateY(2px);
}

/* Piège à robots : hors écran, hors tabulation, hors arbre d'accessibilité. */
.pot{ position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Consentement et envoi */
.consent{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.55;
}
.consent input{ position: absolute; width: 1px; height: 1px; margin: 0; opacity: 0; pointer-events: none; }
.consent .choix__marque{ margin-top: 3px; }
.consent:has(input:checked) .choix__marque{ background: var(--spark); border-color: var(--spark); }
.consent:has(input:checked) .choix__marque::after{ border-color: var(--on-spark); }
.consent:has(input:focus-visible) .choix__marque{ outline: 2px solid var(--spark); outline-offset: 3px; }
.field--faute .consent{ color: var(--error); }
.form__mention{ margin: 0; font-size: 0.82rem; line-height: 1.55; color: var(--faint); max-width: 60ch; }
.form__pied{ display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 4px; }
.form__etat{ margin: 0; font-size: 0.85rem; color: var(--error); flex: 1 1 220px; }
.form__etat:empty{ display: none; }
.form__brouillon{ margin: 0; font-size: 0.8rem; color: var(--faint); }
.form__brouillon button{
  font: inherit;
  background: none;
  border: 0;
  padding: 0;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.form__brouillon button:hover{ color: var(--spark); }

.form-recu{
  border: 1px solid color-mix(in oklch, var(--spark) 34%, transparent);
  border-radius: 20px;
  padding: clamp(26px, 3.4vw, 40px);
  background: color-mix(in oklch, var(--spark) 7%, transparent);
  display: grid;
  gap: 16px;
  scroll-margin-top: 110px;
}
.form-recu__mention{
  margin: 0;
  font-size: 0.8rem;
  color: var(--faint);
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
}
.courriel a{ color: var(--spark); text-decoration: none; border-bottom: 1px solid color-mix(in oklch, var(--spark) 40%, transparent); }
.courriel a:hover{ border-bottom-color: var(--spark); }

/* ---------- Liens dans le texte ---------- */
.lien{
  color: var(--spark);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in oklch, var(--spark) 40%, transparent);
  transition: border-color .28s var(--ease);
}
.lien:hover{ border-bottom-color: var(--spark); }
.lien:focus-visible{ outline: 2px solid var(--spark); outline-offset: 3px; border-radius: 2px; }

/* ---------- Avis de confidentialité ---------- */
/* Même avis que sur la page d'accueil : aucun cookie, donc rien à
   accepter ni à refuser, seulement le devoir d'informer de la nLPD. */
.avis{
  position: fixed;
  z-index: 60;
  right: var(--gut);
  bottom: clamp(16px, 3vw, 28px);
  width: min(calc(100% - var(--gut) * 2), 384px);
  display: grid;
  gap: 14px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: color-mix(in oklch, var(--ink-2) 94%, transparent);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 50px oklch(0.05 0.02 268 / .55);
  animation: avis-entree .6s var(--ease) both;
}
@keyframes avis-entree{
  from{ opacity: 0; transform: translateY(14px); }
  to{ opacity: 1; transform: none; }
}
.avis__texte{ margin: 0; font-size: 0.86rem; line-height: 1.55; color: var(--muted); }
.avis__texte b{ color: var(--ivory); font-weight: 600; }
.avis__pied{ display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.avis__pied .lien{ font-size: 0.82rem; }

/* ---------- Pied ---------- */
.foot{ border-top: 1px solid var(--line); padding-block: 34px 44px; }
.foot__in{ display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.foot p{ margin: 0; color: var(--faint); font-size: 0.83rem; }
.foot a{ color: var(--muted); text-decoration: none; }
.foot a:hover{ color: var(--spark); }

/* ---------- Petits écrans ---------- */
@media (max-width: 1024px){
  .nav__links .nav__link{ display: none; }
  .hero__grid{ grid-template-columns: minmax(0, 1fr); }
  .corps{ grid-template-columns: minmax(0, 1fr); }
  .sommaire{
    position: static;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 18px;
  }
  .sommaire__liste{ grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 20px; }
  .cartes{ grid-template-columns: minmax(0, 1fr); }
  .form__row--3{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px){
  .hero{ padding-top: 110px; }
  .chapitre__tete{ grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .chapitre__id{ flex-direction: row; align-items: baseline; gap: 14px; }
  .numeral{ font-size: 2.2rem; }
  .form__row, .form__row--3{ grid-template-columns: minmax(0, 1fr); }
  .sommaire__liste{ grid-template-columns: minmax(0, 1fr); }
  .form__pied{ gap: 12px; }
  .form__pied .btn{ width: 100%; justify-content: center; }
}