/* numerodesecu : feuille de style commune du site (articles des vidéos, page de la présidentielle, accueil).
   Bleu-blanc-rouge sobre, papier blanc cassé ; polices du système (aucune police ni aucun script externes : rien ne
   part chez un tiers quand on lit une page). Thème clair et sombre. */
:root {
  --papier: #f6f4ef;
  --surface: #ffffff;
  --encre: #16213a;
  --encre-douce: #4a5368;
  --rouge: #d42029;
  --marine: #1f3a68;
  --filet: #ddd7cb;
  --pastel-bleu: #e3eaf6;
  --pastel-rouge: #fbe4e1;
  --serif: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --papier: #10141f;
    --surface: #171d2c;
    --encre: #e9e6df;
    --encre-douce: #aab0bf;
    --rouge: #ff5a5f;
    --marine: #8fb0e8;
    --filet: #2c3448;
    --pastel-bleu: #1a2540;
    --pastel-rouge: #3a1d22;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--papier);
  color: var(--encre);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.65;
}
a { color: var(--marine); text-underline-offset: 0.15em; }
a:hover { color: var(--rouge); }
img, video { max-width: 100%; }

/* En-tête et pied de page du site */
header.site, footer.site {
  font-family: var(--sans);
  padding: 14px max(16px, env(safe-area-inset-right, 0px)) 14px max(16px, env(safe-area-inset-left, 0px));
}
header.site {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 3px solid var(--encre);
  max-width: 980px;
  margin: 0 auto;
}
.marque {
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--encre);
  text-decoration: none;
}
.marque span { color: var(--rouge); }
header.site nav { display: flex; gap: 18px; font-size: 0.95rem; font-weight: 600; }
header.site nav a { text-decoration: none; color: var(--encre-douce); }
footer.site {
  max-width: 980px;
  margin: 64px auto 0;
  border-top: 1px solid var(--filet);
  font-size: 0.85rem;
  color: var(--encre-douce);
  padding-bottom: 40px;
}

/* Article */
main.article {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px));
}
.rubrique {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rouge);
  margin: 0 0 8px;
}
h1, h2, h3 { font-family: var(--sans); line-height: 1.15; text-wrap: balance; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 6vw, 3rem); font-weight: 900; margin: 0 0 16px; }
h2 { font-size: 1.45rem; font-weight: 800; margin: 2.2em 0 0.6em; }
h3 { font-size: 1.15rem; font-weight: 800; margin: 1.6em 0 0.4em; }
.chapo { font-size: 1.28rem; line-height: 1.5; font-weight: 600; margin: 0 0 24px; }
.signature { font-family: var(--sans); font-size: 0.88rem; color: var(--encre-douce); margin: 0 0 28px; }
p { margin: 0 0 1.05em; }
sup.ref { font-family: var(--sans); font-size: 0.68em; line-height: 0; }
sup.ref a { text-decoration: none; font-weight: 700; }
blockquote {
  margin: 1.4em 0;
  padding: 0.2em 0 0.2em 1.1em;
  border-left: 4px solid var(--rouge);
  font-style: italic;
}

/* Vidéo verticale */
figure.video {
  margin: 0 0 32px;
  display: grid;
  justify-items: center;
  gap: 10px;
}
figure.video video {
  width: min(100%, 380px);
  aspect-ratio: 9 / 16;
  background: #000;
  border-radius: 14px;
  box-shadow: 0 12px 34px rgb(0 0 0 / 0.18);
}
figure.video figcaption { font-family: var(--sans); font-size: 0.92rem; text-align: center; }
.bouton {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
  color: #fff;
  background: var(--rouge);
  padding: 9px 18px;
  border-radius: 999px;
}
.bouton:hover { color: #fff; filter: brightness(1.08); }

/* Encadré des chiffres clés */
aside.chiffres {
  background: var(--surface);
  border: 1px solid var(--filet);
  border-top: 5px solid var(--marine);
  border-radius: 10px;
  padding: 18px 22px 8px;
  margin: 28px 0;
  font-family: var(--sans);
}
aside.chiffres h2 { margin: 0 0 10px; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; }
aside.chiffres ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
aside.chiffres li { font-size: 0.98rem; line-height: 1.45; }
aside.chiffres li strong { display: block; font-size: 1.7rem; font-weight: 900; color: var(--rouge); line-height: 1.1; }

/* Encadré « en bref », tableaux */
.encadre { background: var(--pastel-bleu); border-radius: 10px; padding: 16px 20px; margin: 24px 0; }
.encadre > :last-child { margin-bottom: 0; }
.tableau { overflow-x: auto; margin: 20px 0; }
table { border-collapse: collapse; width: 100%; font-family: var(--sans); font-size: 0.92rem; }
th, td { border-bottom: 1px solid var(--filet); padding: 8px 10px; text-align: left; vertical-align: top; }
th { font-weight: 800; }
td.nombre, th.nombre { text-align: right; font-variant-numeric: tabular-nums; }

/* Références et crédits */
section.references, section.credits { font-family: var(--sans); font-size: 0.88rem; line-height: 1.5; }
section.references ol { padding-left: 1.6em; }
section.references li { margin-bottom: 0.55em; overflow-wrap: anywhere; }
section.references li:target { background: var(--pastel-rouge); }
section.credits { color: var(--encre-douce); }

/* Accueil : liste des vidéos */
main.accueil { max-width: 980px; margin: 0 auto; padding: 28px max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px)); }
.cartes { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 22px; margin-top: 24px; }
.carte { background: var(--surface); border: 1px solid var(--filet); border-radius: 12px; overflow: hidden; text-decoration: none; color: var(--encre); display: grid; }
.carte img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 30%; display: block; }
.carte div { padding: 12px 16px 16px; font-family: var(--sans); }
.carte h2 { font-size: 1.1rem; margin: 4px 0 6px; }
.carte p { font-size: 0.9rem; color: var(--encre-douce); margin: 0; }