.hero-header {
  background:
    linear-gradient(180deg, rgba(10,25,47,0.22) 0%, rgba(10,25,47,0.32) 45%, rgba(10,25,47,0.58) 100%),
    url('../images/image_de_fond/Formation.png');
  background-size: cover;
  background-position: center;
  padding: 110px 0 70px;
  color: #fff;
  text-align: center;
}
.hero-header h1 {
  margin: 0;
  font-weight: 800;
  letter-spacing: 0.06em;
  font-size: clamp(1.85rem, 4.2vw, 2.55rem);
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.6), 0 1px 4px rgba(0, 0, 0, 0.75);
}
.hero-header .lead {
  max-width: 760px;
  margin: 15px auto 0;
  color: #eef4ff;
  font-size: 1.1rem;
  line-height: 1.55;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.55), 0 1px 3px rgba(0, 0, 0, 0.65);
}

.portfolio-section {
  padding: 3rem 0 5rem;
  background: #f3f7ff;
}

.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: 2rem;
}
.portfolio-filter {
  border: 1px solid rgba(0, 48, 135, .2);
  background: #fff;
  color: #26486f;
  border-radius: 999px;
  padding: .42rem 1rem;
  font-weight: 700;
  font-size: .82rem;
  cursor: pointer;
}
.portfolio-filter.is-active {
  background: #d8041f;
  color: #fff;
  border-color: #d8041f;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.2rem;
}

.portfolio-card {
  background: #fff;
  border: 1px solid rgba(10, 42, 79, .1);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 22px rgba(10, 42, 79, .08);
}
.portfolio-card__image-wrap {
  position: relative;
  height: 190px;
}
.portfolio-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.portfolio-card__badge {
  position: absolute;
  left: .8rem;
  bottom: .8rem;
  background: rgba(216, 4, 31, .95);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  border-radius: 999px;
  padding: .26rem .7rem;
}
.portfolio-card__body {
  padding: 1rem 1rem 1.2rem;
}
.portfolio-card__title {
  margin: 0 0 .35rem;
  color: #132f52;
  font-size: 1.04rem;
  line-height: 1.35;
}
.portfolio-card__meta {
  color: #5f7393;
  font-size: .82rem;
  margin: 0 0 .5rem;
}
.portfolio-card__text {
  color: #3f5576;
  font-size: .9rem;
  margin: 0 0 .5rem;
}
.portfolio-card__result {
  color: #1f3659;
  font-size: .86rem;
  margin: 0;
}

.portfolio-cta {
  margin-top: 2.2rem;
  background: #fff;
  border: 1px solid rgba(10, 42, 79, .1);
  border-radius: 14px;
  padding: 1.6rem;
  text-align: center;
}
.portfolio-cta h2 {
  margin: 0 0 .5rem;
  font-size: 1.4rem;
  color: #0f2a4a;
}
.portfolio-cta p {
  margin: 0 0 1rem;
  color: #50627f;
}