/* Variables de couleur */
.apei-ptfeed {
  --color-bleu: #0e4c8b;
  --color-bleu-dark: #0a3a6b;
  --color-orange: #e9bc29;
  max-width: 1100px;
}

/* Typographie globale */
.apei-ptfeed,
.apei-ptfeed *,
.apei-ptfeed__item,
.apei-ptfeed__title,
.apei-ptfeed__title a,
.apei-ptfeed__date,
.apei-ptfeed__excerpt,
.apei-ptfeed__cta,
.apei-ptfeed__moreBtn,
.apei-ptfeed__status {
  font-family: "Gotham Rounded Bold", sans-serif !important;
}

/* Item */
.apei-ptfeed__item {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  padding: 22px 0;
}

.apei-ptfeed__item + .apei-ptfeed__item {
  margin-top: 6px;
}

/* Thumbnail */
.apei-ptfeed__thumb {
  width: 210px;
  height: 210px;
  flex: 0 0 210px;
  border: 2px solid var(--color-bleu);
  border-radius: 16px;
  overflow: hidden;
  display: block;
  background: #fff;
}

.apei-ptfeed__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.apei-ptfeed__thumbFallback {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f0f4f8, #e2e9f0);
}

/* Body */
.apei-ptfeed__body {
  flex: 1;
  padding-top: 8px;
}

/* Title */
.apei-ptfeed__title {
  margin: 0 0 10px 0;
  line-height: 1.15;
  font-weight: 800;
  font-size: 28px;
}

.apei-ptfeed__title a {
  color: var(--color-bleu);
  text-decoration: none;
}

.apei-ptfeed__title a:hover {
  color: var(--color-orange);
}

/* Date */
.apei-ptfeed__date {
  color: var(--color-bleu);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 8px;
}

/* Excerpt */
.apei-ptfeed__excerpt {
  color: #1f2a37;
  font-size: 16px;
  line-height: 1.45;
  margin-bottom: 14px;
  max-width: 720px;
}

/* CTA Button */
.apei-ptfeed__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-bleu);
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  padding: 12px 18px;
  border-radius: 10px;
  border: 0;
}

.apei-ptfeed__cta:hover {
  background: var(--color-bleu-dark);
}

.apei-ptfeed__ctaIco {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: #fff;
  color: var(--color-bleu);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
}

/* Load More Button */
.apei-ptfeed__moreWrap {
  padding: 18px 0 6px;
}

.apei-ptfeed__moreBtn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-bleu);
  color: #fff;
  font-weight: 800;
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  cursor: pointer;
}

.apei-ptfeed__moreBtn:hover {
  background: var(--color-bleu-dark);
}

.apei-ptfeed__btnIco {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: #fff;
  color: var(--color-bleu);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
}

.apei-ptfeed__moreBtn[disabled] {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Status */
.apei-ptfeed__status {
  margin-top: 8px;
  font-size: 14px;
  color: #334155;
}

/* Responsive */
@media (max-width: 760px) {
  .apei-ptfeed__item {
    flex-direction: column;
    gap: 16px;
  }

  .apei-ptfeed__thumb {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    flex: 0 0 auto;
  }

  .apei-ptfeed__title {
    font-size: 22px;
  }
}
```

**Structure des fichiers :**
```
wp-content/plugins/site-b-flux-actualites/
├── site-b-flux-actualites.php  (le code PHP ci-dessus)
└── apei-ptfeed.css             (le fichier CSS ci-dessus)