:root {
  --indigo: #2416a8;
  --violet: #4932e5;
  --cyan: #14c7e8;
  --fond: #f8faff;
  --texte-secondaire: #50618f;
  --bordure: #e2e6f4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding-bottom: 4.7rem;
  color: var(--indigo);
  background:
    radial-gradient(circle at 88% 8%, #e8f8ff 0, transparent 29rem),
    radial-gradient(circle at 5% 34%, #f5efff 0, transparent 28rem),
    var(--fond);
  font-family: Arial, Helvetica, sans-serif;
}

main { margin: auto; max-width: 42rem; min-height: 100vh; }

.hero { padding: 1.4rem 1.35rem 2.8rem; }

.marque { align-items: center; display: flex; font-size: .9rem; font-weight: 800; gap: .6rem; letter-spacing: .04em; }
.marque img { border-radius: 1rem; box-shadow: 0 .5rem 1.4rem #2416a82e; height: 2.7rem; width: 2.7rem; }

.accroche { margin-top: 3.4rem; }
.eyebrow { color: var(--violet); font-size: .72rem; font-weight: 800; letter-spacing: .12em; margin: 0 0 .8rem; }
h1, h2 { letter-spacing: -.04em; margin: 0; }
h1 { font-size: clamp(2.35rem, 10vw, 4.35rem); line-height: .98; }
.titre-avec-logo { align-items: flex-start; display: flex; gap: .8rem; justify-content: space-between; }
.logo-principal { border-radius: 1.35rem; box-shadow: 0 .8rem 1.5rem #2416a826; flex: 0 0 auto; height: clamp(4.1rem, 18vw, 6.4rem); margin-top: -.45rem; width: clamp(4.1rem, 18vw, 6.4rem); }
.resume { color: var(--texte-secondaire); font-size: 1.06rem; line-height: 1.55; margin: 1.4rem 0 1.7rem; max-width: 30rem; }

.installer {
  align-items: center;
  background: linear-gradient(130deg, #09adec, var(--cyan));
  border-radius: 1.45rem;
  box-shadow: 0 .7rem 1.6rem #14c7e866, 0 0 0 0 #14c7e875;
  color: #061c83;
  display: flex;
  gap: 1rem;
  min-height: 5.4rem;
  padding: .75rem 1.1rem;
  text-decoration: none;
  animation: appel-installation 1.65s ease-in-out infinite;
}
.installer:focus-visible { outline: .25rem solid var(--cyan); outline-offset: .25rem; }
.installer__icone { align-items: center; background: #fff; border-radius: 1rem; color: var(--indigo); display: grid; font-size: 2rem; font-weight: 700; height: 3.7rem; place-items: center; width: 3.7rem; }
.installer strong, .installer small { display: block; }
.installer strong { font-size: 1.1rem; }
.installer small { font-size: .75rem; letter-spacing: .1em; margin-top: .17rem; opacity: .78; }
.compatibilite { align-items: center; color: var(--texte-secondaire); display: flex; font-size: .82rem; font-weight: 800; gap: 1.1rem; justify-content: center; margin: 1rem .2rem 0; }
.plateforme { align-items: center; display: inline-flex; gap: .4rem; }
.android-signe { background: var(--indigo); border-radius: .45rem .45rem .18rem .18rem; display: inline-block; height: .72rem; position: relative; width: .9rem; }
.android-signe::before, .android-signe::after { background: var(--indigo); content: ''; height: .48rem; position: absolute; top: -.32rem; width: .08rem; }
.android-signe::before { left: .17rem; transform: rotate(-28deg); }
.android-signe::after { right: .17rem; transform: rotate(28deg); }
.android-signe i, .android-signe i::after { background: #fff; border-radius: 50%; content: ''; height: .1rem; position: absolute; top: .2rem; width: .1rem; }
.android-signe i { left: .23rem; }
.android-signe i::after { left: .33rem; top: 0; }
.iphone-signe { border: .13rem solid var(--indigo); border-radius: .22rem; display: inline-block; height: 1rem; position: relative; width: .6rem; }
.iphone-signe::after { background: var(--indigo); border-radius: 50%; bottom: .08rem; content: ''; height: .08rem; left: .19rem; position: absolute; width: .08rem; }
.disponibilite { color: var(--indigo); font-size: .88rem; font-weight: 800; margin: .75rem 0 0; text-align: center; }
.installation-aide { color: var(--texte-secondaire); font-size: .8rem; line-height: 1.45; margin: .85rem auto 0; max-width: 27rem; text-align: center; }
.ouvrir-application { color: var(--violet); display: block; font-size: .85rem; font-weight: 800; margin: .85rem auto 0; text-align: center; text-decoration: underline; text-underline-offset: .18rem; }
.ouvrir-application:focus-visible { outline: .2rem solid var(--cyan); outline-offset: .2rem; }

.etapes { background: #fff; border: 1px solid var(--bordure); border-radius: 2rem 2rem 0 0; box-shadow: 0 -.5rem 2rem #2416a00d; padding: 2.4rem 1.35rem; }
.etapes h2 { font-size: 1.8rem; }
ol { display: grid; gap: .8rem; list-style: none; margin: 1.8rem 0 0; padding: 0; }
li { align-items: center; background: #f8faff; border: 1px solid var(--bordure); border-radius: 1rem; display: flex; font-weight: 700; gap: .85rem; padding: .8rem; }
li b { align-items: center; background: #eeeaff; border-radius: .7rem; color: var(--violet); display: grid; height: 2.2rem; place-items: center; width: 2.2rem; }

.assistance { background: var(--indigo); color: white; padding: 2.5rem 1.35rem 3rem; }
.assistance .eyebrow { color: #73ddf5; }
.assistance h2 { font-size: 1.6rem; }
.assistance p { color: #e7e5ff; line-height: 1.5; }
.contacts { display: grid; gap: .7rem; margin-top: 1.5rem; }
.contact { align-items: center; background: #ffffff14; border: 1px solid #ffffff30; border-radius: 1rem; color: #fff; display: flex; gap: .75rem; min-height: 4.2rem; padding: .65rem .8rem; text-decoration: none; }
.contact:hover { background: #ffffff22; }
.contact:focus-visible, .contact-rapide:focus-visible { outline: .2rem solid #fff; outline-offset: .2rem; }
.contact__icone { align-items: center; background: #fff; border-radius: .75rem; color: var(--indigo); display: grid; flex: 0 0 auto; font-size: 1.22rem; font-weight: 800; height: 2.75rem; place-items: center; width: 2.75rem; }
.contact strong, .contact small { display: block; }
.contact strong { font-size: .95rem; }
.contact small { color: #e7e5ff; font-size: .78rem; margin-top: .12rem; overflow-wrap: anywhere; }
.contact--whatsapp { background: #19a463; border-color: #36bd7e; }
.contact--whatsapp .contact__icone { color: #147c4b; }

.contact-rapide { align-items: center; background: #19a463; border: 2px solid #fff; border-radius: 2rem; bottom: .8rem; box-shadow: 0 .55rem 1.3rem #061c8355; color: #fff; display: flex; font-size: .87rem; font-weight: 800; gap: .45rem; left: 50%; min-height: 3.15rem; padding: .55rem 1rem; position: fixed; text-decoration: none; transform: translateX(-50%); white-space: nowrap; z-index: 2; }
.contact-rapide span { font-size: 1.2rem; }

@keyframes appel-installation {
  0%, 100% { transform: translateY(0) scale(1); box-shadow: 0 .7rem 1.6rem #14c7e866, 0 0 0 0 #14c7e875; }
  50% { transform: translateY(-.22rem) scale(1.018); box-shadow: 0 1rem 2.1rem #14c7e899, 0 0 0 .52rem #14c7e800; }
}

@media (prefers-reduced-motion: reduce) {
  .installer { animation: none; }
}

@media (min-width: 43rem) {
  main { box-shadow: 0 0 3rem #2416a12; }
  .hero { padding: 2rem 2.5rem 3.7rem; }
  .etapes, .assistance { padding-left: 2.5rem; padding-right: 2.5rem; }
}