:root {
  color-scheme: dark;
  --fond: #05050C;
  --ciel: #0B0B1A;
  --texte: rgba(255, 255, 255, 0.86);
  --discret: rgba(255, 255, 255, 0.56);
  --accent: #57E6FF;
  --trait: rgba(87, 230, 255, 0.18);
}
* { box-sizing: border-box; }
html { background: var(--fond); }
body {
  margin: 0;
  padding: 0 16px 64px;
  background: linear-gradient(var(--ciel), var(--fond) 480px) no-repeat;
  color: var(--texte);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
}
main { max-width: 720px; margin: 0 auto; }
a { color: var(--accent); }
.pastille {
  padding: 4px 12px;
  border: 1px solid var(--trait);
  border-radius: 999px;
  color: var(--accent);
  text-decoration: none;
}
.pastille:hover, .pastille:focus-visible { background: var(--trait); }

h1 { color: #fff; font-size: 1.75rem; line-height: 1.25; margin: 0; padding: 48px 0 16px; }
nav { display: flex; flex-wrap: wrap; gap: 8px; padding-bottom: 24px; border-bottom: 1px solid var(--trait); }
section { padding: 32px 0; border-bottom: 1px solid var(--trait); scroll-margin-top: 16px; }
section:last-child { border-bottom: 0; }
h2 { color: var(--accent); font-size: 1.4rem; margin: 0 0 4px; }
h3 { color: #fff; font-size: 1.05rem; margin: 28px 0 8px; }
p, ul { margin: 0 0 12px; }
ul { padding-inline-start: 24px; }
em { color: var(--discret); }
strong { color: #fff; }
.adresse { height: 1.6em; width: auto; vertical-align: bottom; }

.accueil { display: flex; align-items: center; min-height: 100svh; padding-bottom: 0; }
.accueil main { width: 100%; }
.accueil h1 {
  padding: 0;
  color: #EDF3FF;
  font-size: clamp(2.25rem, 9vw, 4.5rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  line-height: 1.15;
  text-transform: uppercase;
  text-shadow: 0 0 24px rgba(87, 230, 255, 0.35);
}
.accueil h1 span { display: block; }
.accueil .trait { width: 120px; height: 4px; margin: 28px 0 32px; border-radius: 2px; background: var(--accent); }
.accueil .pastille { display: inline-block; padding: 10px 20px; }