.about-tabs-section {
  background: #162449;
}
.about-window {
  background: rgba(20,32,64,0.97);
  border-radius: 24px;
  box-shadow: 0 8px 48px #0d162a55;
  min-height: 400px;
}
.about-tab-btn {
  border: none;
  outline: none;
  background: #1e2e56;
  color: #e6eefb;
  font-weight: 600;
  font-size: 1.18rem;
  padding: 0.7rem 2.2rem;
  border-radius: 18px;
  margin-bottom: 0.15rem;
  cursor: pointer;
  box-shadow: 0 3px 16px #101c3922;
  transition: background .23s, color .23s, box-shadow .23s;
  position: relative;
}
.about-tab-btn.active,
.about-tab-btn:focus,
.about-tab-btn:hover {
  background: linear-gradient(90deg,#294f83 70%,#5bc0ff 100%);
  color: #fff;
  box-shadow: 0 6px 32px #5bc0ff44;
}
.about-tab-btn.active:after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -15px;
  transform: translateX(-50%);
  width: 28px;
  height: 14px;
  background: transparent;
  border-bottom: 8px solid #5bc0ff;
  border-radius: 0 0 16px 16px;
  z-index: 2;
}
.about-tab-content {
  min-height: 188px;
  animation: fadeInTab .33s;
}
@keyframes fadeInTab {
  from { opacity: 0; transform: translateY(15px);}
  to { opacity: 1; transform: translateY(0);}
}
.about-tab-content h3 {
  color: #ffb336;
  font-size: 2rem;
}
.about-tab-content p,
.about-tab-content ul {
  color: #e3e8ef;
  font-size: 1.07rem;
}

/* Feedback block style */
.about-feedback-block {
  border-left: 4px solid #5bc0ff;
  margin-left: 0;
  padding-left: 1em;
  font-size: 0.98rem;
  background: rgba(44,68,120,0.13);
  border-radius: 0 8px 8px 0;
}

.about-img-circle {
  width: 380px;
  height: 380px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-img-circle-img {
  width: 340px;
  height: 340px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 6px 36px #101c392a;
}
.about-img-border {
  pointer-events: none;
  top: 0; left: 0;
  width: 100% !important; height: 100% !important;
  z-index: 2;
}
@media (max-width: 991.98px) {
  .about-img-circle { width: 260px; height: 260px; }
  .about-img-circle-img { width: 220px; height: 220px;}
}
@media (max-width: 767.98px) {
  .about-window { min-height: 330px; }
  .about-img-circle { width: 180px; height: 180px;}
  .about-img-circle-img { width: 150px; height: 150px;}
  .about-tab-btn { font-size: 1rem; padding: 0.5rem 1.3rem;}
}