.cozumler-section {
  max-width: 1200px;
  margin: 80px auto 0 auto;
  padding: 0 18px 70px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.cozumler-title {
  color: #e63946;
  font-size: 2.3rem;
  font-weight: 900;
  letter-spacing: .07em;
  margin-bottom: 14px;
  margin-top: 0;
  text-shadow: 0 4px 34px #e6394632, 0 0 10px #e6394622;
}
.cozumler-tabs {
  display: flex;
  gap: 24px;
  margin-bottom: 36px;
  justify-content: center;
}
.tab-btn {
  background: none;
  border: none;
  font-size: 1.22rem;
  font-weight: 700;
  color: #eee;
  padding: 12px 36px 13px 36px;
  border-radius: 13px 13px 0 0;
  cursor: pointer;
  position: relative;
  outline: none;
  transition: background .15s, color .14s;
  letter-spacing: .04em;
}
.tab-btn.active,
.tab-btn:hover {
  color: #e63946;
  background: #151216;
}
.tab-btn.active::after,
.tab-btn:hover::after {
  content: "";
  position: absolute;
  left: 18%;
  bottom: -8px;
  width: 64%;
  height: 4px;
  background: linear-gradient(90deg, #ff223a 0%, #e63946 100%);
  border-radius: 2px;
  box-shadow: 0 2px 12px #e6394642;
}
.tab-contents {
  width: 100%;
}
.tab-content {
  display: none;
  opacity: 0;
  animation: fadeIn .55s;
  min-height: 210px;
}
.tab-content.active {
  display: block;
  opacity: 1;
  animation: fadeIn .65s;
}
@keyframes fadeIn {
  0% { opacity: 0; transform: translateY(35px);}
  100% { opacity: 1; transform: translateY(0);}
}
.tab-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px 22px;
  margin-top: 20px;
}
.tab-card {
  background: #191a1b;
  border-left: 4px solid #e63946;
  border-radius: 14px;
  box-shadow: 0 2px 18px #e6394610;
  padding: 28px 22px 22px 22px;
  max-width: 280px;
  min-width: 220px;
  flex: 1 1 220px;
  color: #fff;
  transition: box-shadow .18s, border-color .14s, transform .13s;
  position: relative;
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.tab-card .icon {
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}
.tab-card .icon svg {
  display: block;
  width: 36px;
  height: 36px;
  stroke: #e63946;
  transition: stroke .18s;
}
.tab-card h3 {
  color: #e63946;
  font-size: 1.11rem;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: .01em;
}
.tab-card p {
  color: #fff;
  font-size: .97rem;
  opacity: 0.98;
  margin: 0;
  text-align: left;
  line-height: 1.53;
}
.tab-card:hover {
  box-shadow: 0 0 18px 2px #e6394628, 0 2px 32px #e6394615;
  border-left: 4.5px solid #ff2255;
  transform: translateY(-3px) scale(1.019);
}
.tab-card:hover .icon svg {
  stroke: #ff2255;
}
@media (max-width: 900px) {
  .tab-cards { flex-direction: column; align-items: center; }
  .tab-card { max-width: 98vw; width: 98vw; min-width: 0; }
  .cozumler-tabs { flex-direction: column; gap: 8px;}
  .tab-btn { width: 100%; min-width: 0; border-radius: 13px; }
}
/* TÜM SAYFA için örnek: */
body {
  scrollbar-width: thin;              /* Firefox için: ince scrollbar */
  scrollbar-color: #20ffe4 #23242e;   /* Renk (kaydırma kolu, arkaplan) */
}

/* Webkit tabanlı tarayıcılar (Chrome, Edge, Opera, Safari) */
body::-webkit-scrollbar {
  width: 9px;
  background: #23242e;
  border-radius: 10px;
}
body::-webkit-scrollbar-thumb {
  background: linear-gradient(120deg,#20ffe4 20%,#e63946 90%);
  border-radius: 10px;
  box-shadow: 0 0 6px #20ffe488;
  border: 2px solid #20202c;
  transition: background .3s;
}
body::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(120deg,#e63946 10%,#20ffe4 85%);
  box-shadow: 0 0 12px #e63946cc;
}
body::-webkit-scrollbar-corner {
  background: #23242e;
}