/* Navette — mêmes bleus que l'icône, clair et sombre. */
:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #121729;
  --sub: #5a6178;
  --line: #e2e7f1;
  --blue: #2e5fe0;
  --blue-soft: rgba(46, 95, 224, 0.1);
  --orange: #ff7a59;
  --green: #1fa463;
  --hero: linear-gradient(135deg, #5b9bff 0%, #2e5fe0 48%, #1b2f86 100%);
  --shadow: 0 12px 40px rgba(18, 35, 90, 0.12);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0e1c;
    --card: #151a2e;
    --text: #eef1ff;
    --sub: #a2a9c4;
    --line: #242a45;
    --blue: #7ea6ff;
    --blue-soft: rgba(126, 166, 255, 0.14);
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* En-tête */
header.top {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
header.top .wrap { display: flex; align-items: center; gap: 14px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 19px; }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 34px; }
nav { margin-left: auto; display: flex; gap: 22px; font-size: 15px; }
nav a { color: var(--sub); }
nav a:hover { color: var(--text); text-decoration: none; }

/* Bandeau principal */
.hero {
  background: var(--hero);
  color: #fff;
  padding: 72px 0 84px;
  border-radius: 0 0 40px 40px;
  overflow: hidden;
}
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(34px, 5.4vw, 56px); line-height: 1.08; margin: 0 0 18px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 20px; opacity: 0.9; margin: 0 0 30px; max-width: 34em; }
.hero .art { display: flex; justify-content: center; }
.hero .art img { width: min(320px, 70vw); filter: drop-shadow(0 30px 50px rgba(5, 15, 60, 0.45)); }

.buttons { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 26px;
  border-radius: 999px;
  font-weight: 650;
  font-size: 17px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.button:hover { text-decoration: none; transform: translateY(-1px); }
.button.primary { background: #fff; color: #1b2f86; box-shadow: 0 10px 30px rgba(5, 15, 60, 0.3); }
.button.ghost { background: rgba(255, 255, 255, 0.14); color: #fff; border: 1px solid rgba(255, 255, 255, 0.35); }
.button svg { width: 20px; height: 20px; flex: none; }
.meta { margin-top: 16px; font-size: 14px; opacity: 0.85; }

/* Sections */
section { padding: 72px 0 8px; }
section h2 { font-size: clamp(28px, 3.6vw, 38px); margin: 0 0 10px; letter-spacing: -0.015em; }
section p.intro { color: var(--sub); margin: 0 0 34px; max-width: 40em; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 14px 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--sub); font-size: 15.5px; }
.badge {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--blue-soft);
  color: var(--blue);
}
.badge svg { width: 24px; height: 24px; }

/* Étapes d'installation */
ol.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; counter-reset: step; }
ol.steps li {
  counter-increment: step;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px 22px 20px 74px;
  position: relative;
}
ol.steps li::before {
  content: counter(step);
  position: absolute;
  left: 22px;
  top: 20px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--hero);
  color: #fff;
  font-weight: 700;
  display: grid;
  place-items: center;
}
ol.steps strong { display: block; margin-bottom: 4px; font-size: 17.5px; }
ol.steps span { color: var(--sub); font-size: 15.5px; }

.note {
  margin-top: 22px;
  padding: 16px 20px;
  border-radius: 16px;
  background: var(--blue-soft);
  color: var(--text);
  font-size: 15px;
}

.check { font-size: 13.5px; color: var(--sub); word-break: break-all; }
.check code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12.5px; color: var(--text); }

/* Pages de texte (confidentialité, contact) */
main.text { padding: 56px 0 24px; }
main.text .wrap { max-width: 760px; }
main.text h1 { font-size: clamp(30px, 4.4vw, 42px); margin: 0 0 8px; letter-spacing: -0.02em; }
main.text h2 { font-size: 22px; margin: 36px 0 8px; }
main.text p, main.text li { color: var(--sub); }
main.text strong { color: var(--text); }
main.text .updated { font-size: 14px; color: var(--sub); margin-bottom: 26px; }

footer {
  margin-top: 80px;
  padding: 30px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--sub);
  font-size: 14px;
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; }
footer nav { margin: 0; gap: 18px; }

@media (max-width: 820px) {
  .hero { padding: 44px 0 56px; border-radius: 0 0 28px 28px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 28px; }
  .hero .art { order: -1; }
  .hero .art img { width: 150px; }
  .hero p.lead { font-size: 18px; }
  .grid { grid-template-columns: 1fr; }
  nav.links a:not(.keep) { display: none; }
  .button { width: 100%; justify-content: center; }
}