:root {
  --fond: #11131c;
  --fond-clair: #1b1f2e;
  --bord: #2c3247;
  --texte: #eef1f8;
  --texte-doux: #a9b0c4;
  --accent: #ffc62e;
  --accent-fonce: #e39b00;
  --rouge: #e8453c;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--fond);
  color: var(--texte);
  font: 17px/1.55 "Nunito", system-ui, sans-serif;
}

h1, h2, .plateforme, .bouton {
  font-family: "Baloo 2", "Nunito", system-ui, sans-serif;
}

code {
  font-size: 0.9em;
  background: var(--fond-clair);
  border: 1px solid var(--bord);
  border-radius: 4px;
  padding: 0 0.3em;
}

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 16px;
}

/* En-tête : un damier de ligne d'arrivée en bas. */
.entete {
  text-align: center;
  padding: 48px 16px 64px;
  background:
    linear-gradient(180deg, #232a45 0%, var(--fond) 100%);
  position: relative;
}
.entete::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 16px;
  background:
    conic-gradient(#fff 25%, #11131c 0 50%, #fff 0 75%, #11131c 0) 0 0 / 16px 16px;
  opacity: 0.85;
}
.icone {
  border-radius: 22px;
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.4);
}
h1 {
  margin: 12px 0 0;
  font-size: clamp(44px, 9vw, 76px);
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
  text-shadow: 0 4px 0 var(--rouge);
  letter-spacing: 0.01em;
}
.accroche {
  margin: 14px auto 0;
  max-width: 34em;
  color: var(--texte-doux);
}

h2 {
  font-size: 30px;
  font-weight: 800;
  margin: 48px 0 8px;
}

.version {
  margin: 0 0 20px;
  color: var(--texte-doux);
}
.version strong { color: var(--texte); }

.cartes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.carte {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px 22px 20px;
  background: var(--fond-clair);
  border: 1px solid var(--bord);
  border-radius: 14px;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.carte:hover, .carte:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.carte:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.plateforme {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.1;
}
.detail {
  color: var(--texte-doux);
  font-size: 15px;
}
.bouton {
  align-self: flex-start;
  margin-top: 14px;
  padding: 8px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #1a1400;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 3px 0 var(--accent-fonce);
}

.installer {
  margin-top: 20px;
  display: grid;
  gap: 10px;
}
details {
  background: var(--fond-clair);
  border: 1px solid var(--bord);
  border-radius: 10px;
  padding: 10px 16px;
}
summary {
  cursor: pointer;
  font-weight: 700;
}
details ol { margin: 10px 0 4px; padding-left: 1.3em; }
details li + li { margin-top: 4px; }

.galerie {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
}
.galerie figure {
  margin: 0;
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--bord);
}
.galerie img {
  display: block;
  width: 100%;
  height: auto;
}
.galerie figcaption {
  position: absolute;
  left: 8px; bottom: 8px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgb(10 12 20 / 0.75);
  font-size: 14px;
  font-weight: 700;
}

.liste {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 8px 24px;
}
.liste li {
  padding-left: 22px;
  position: relative;
  color: var(--texte-doux);
}
.liste li::before {
  content: "";
  position: absolute;
  left: 2px; top: 0.55em;
  width: 10px; height: 10px;
  border-radius: 2px;
  background: var(--accent);
  transform: rotate(45deg);
}
.liste strong { color: var(--texte); }

.pied {
  margin-top: 64px;
  padding: 24px 16px 40px;
  text-align: center;
  color: var(--texte-doux);
  font-size: 14px;
  border-top: 1px solid var(--bord);
}

.nouveautes {
  margin-top: 20px;
  padding: 14px 18px;
  background: var(--fond-clair);
  border: 1px solid var(--bord);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
}
.nouveautes h3 {
  margin: 0 0 6px;
  font-family: "Baloo 2", "Nunito", system-ui, sans-serif;
  font-size: 20px;
}
.nouveautes h4 { margin: 10px 0 4px; }
.nouveautes p { margin: 6px 0; color: var(--texte-doux); }
.nouveautes ul { margin: 6px 0; padding-left: 1.3em; color: var(--texte-doux); }