.proven {
  overflow: visible;
  position: relative;
  z-index: 5;
}
.proven__content {
  display: flex;
  flex-flow: column;
  align-items: center;
  gap: 40px;
}
.proven__title {
  font-family: "Poppins";
  font-weight: 500;
  font-size: 82px;
  line-height: 130%;
  text-align: center;
  letter-spacing: -0.02em;
  color: rgba(137, 141, 144, 0.3);
  /* === CARD STACK === */
}
.proven__slider {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  /* створюємо простір для скролу — залежить від кількості карток */
  height: auto;
  --stackTop: 80px;
  --stackGap: 40px;
  overflow: visible;
}
.proven__card {
  display: flex;
  gap: 20px;
  height: 492px;
  position: sticky;
  top: calc(var(--stackTop) + (var(--i, 0) * var(--stackGap)));
  z-index: calc(100 - var(--i, 0));
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.07);
  transition: transform 0.4s ease-out, box-shadow 0.3s ease;
  will-change: transform;
  z-index: var(--i);
  /* відступи для кожної картки */
}
.proven__card:nth-child(1) {
  --i: 0;
}
.proven__card:nth-child(2) {
  --i: 1;
}
.proven__card:nth-child(3) {
  --i: 2;
}
.proven__card:nth-child(4) {
  --i: 3;
}
.proven__card:nth-child(5) {
  --i: 4;
}
.proven__card:nth-child(6) {
  --i: 5;
}
.proven__card:nth-child(7) {
  --i: 6;
}
.proven__card:nth-child(8) {
  --i: 7;
}
.proven__card:nth-child(9) {
  --i: 8;
}
.proven__card:nth-child(10) {
  --i: 9;
  /* --- Контент картки --- */
}
.proven__left {
  max-width: 520px;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  padding: 40px;
  display: flex;
  flex-flow: column;
  gap: 48px;
  justify-content: space-between;
  background: #f3f4f4;
  filter: drop-shadow(0px 4px 10px rgba(0, 0, 0, 0.12));
}
.proven__right {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  overflow: hidden;
  filter: drop-shadow(0px 4px 10px rgba(0, 0, 0, 0.12));
}
.proven__tags {
  display: flex;
  flex-flow: column;
  gap: 8px;
}
.proven__tag {
  border-radius: 4px;
  font-family: "Poppins";
  font-weight: 500;
  font-size: 14px;
  padding: 8px 12px;
  width: fit-content;
  height: 36px;
}
.proven__tag.date {
  background: #fff;
  color: #898d90;
}
.proven__tag.category {
  background: #0d499c;
  color: #fff;
}
.proven__texting {
  display: flex;
  flex-flow: column;
  gap: 16px;
}
.proven__card-title {
  font-family: "Poppins";
  font-weight: 600;
  font-size: 24px;
  color: #4d525a;
}
.proven__card-text {
  font-family: "Poppins";
  font-weight: 400;
  font-size: 16px;
  color: #898d90;
}
.proven__meta {
  display: flex;
  flex-flow: column;
  gap: 24px;
}
.proven__link {
  font-family: "Poppins";
  font-weight: 500;
  font-size: 16px;
  text-decoration: underline;
  color: #0d499c;
}
.proven__meta-item {
  display: flex;
  gap: 8px;
  font-family: "Poppins";
  font-size: 16px;
  color: #898d90;
}
.proven__meta-item .accent {
  color: #0d499c;
  /* === MOBILE FALLBACK === */
}
@media (max-width: 1024px) {
  .proven__slider {
    height: auto;
    margin-bottom: 0;
  }
  .proven__card {
    position: relative;
    top: auto;
    transform: none;
    z-index: auto;
    height: fit-content;
    flex-flow: column-reverse;
    box-shadow: none;
  }
  .proven__right {
    height: 347px;
  }
  .proven__left {
    padding: 18px;
    gap: 32px;
    filter: none;
  }
  .proven__tag {
    font-size: 11px;
    height: 28px;
  }
  .proven__card-title {
    font-size: 16px;
  }
  .proven__card-text {
    font-size: 13px;
  }
  .proven__meta-item, .proven__meta-item .accent, .proven__link {
    font-size: 13px;
  }
}