/* Tech Letter Card — theme-level (no Elementor Loop) */
.tl-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
  box-sizing: border-box;
}
.tl-grid__item {
  margin: 0;
  padding: 0;
  min-width: 0;
}
.tl-grid__empty {
  grid-column: 1 / -1;
  padding: 48px 16px;
  text-align: center;
  color: #6B7788;
  font-size: 15px;
}

.tl-card {
  display: block !important;
  width: 100% !important;
  text-decoration: none !important;
  color: inherit !important;
}
.tl-card__inner {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 2px;
  background: linear-gradient(145deg, #03A87C 0%, #039478 35%, #038272 65%, #036C70 100%);
  box-shadow: 0 10px 28px rgba(0, 60, 55, 0.22);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
  isolation: isolate;
}
.tl-card:hover .tl-card__inner,
.tl-card:focus-visible .tl-card__inner {
  transform: translateY(-8px);
  box-shadow: 0 20px 42px rgba(0, 50, 45, 0.34);
  outline: none;
}

.tl-card__pcb {
  position: absolute;
  right: -10%;
  bottom: -14%;
  z-index: 1;
  width: 76%;
  line-height: 0;
  pointer-events: none;
  filter: drop-shadow(0 16px 28px rgba(0, 0, 0, 0.35));
}
.tl-card__pcb img {
  display: block;
  width: 100%;
  height: auto;
  max-width: none;
  border: 0;
}

.tl-card__content {
  position: relative;
  z-index: 2;
  display: block;
  box-sizing: border-box;
  width: 58%;
  padding: clamp(16px, 6%, 34px);
  padding-right: 0;
}
.tl-card__badge {
  display: inline-block;
  padding: 0.32em 0.85em;
  margin: 0 0 12px;
  background: #fff;
  color: #007A72;
  border-radius: 999px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: clamp(12px, 2.8vw, 16px);
  font-weight: 800;
  line-height: 1.2;
}
.tl-card__kicker {
  display: block;
  margin: 0 0 14px;
  color: #fff;
  font-family: Arial Black, Arial, Helvetica, sans-serif;
  font-size: clamp(22px, 4.2vw, 40px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  white-space: nowrap;
}
.tl-card__date {
  display: block;
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
}
.tl-card__year {
  display: block;
  font-size: clamp(16px, 2.8vw, 26px);
  font-weight: 700;
  line-height: 1;
}
.tl-card__month {
  display: block;
  margin-top: -0.06em;
  font-size: clamp(56px, 11vw, 108px);
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: -0.05em;
}
.tl-card__products {
  position: absolute;
  left: clamp(16px, 6%, 34px);
  bottom: clamp(16px, 5.5%, 30px);
  z-index: 2;
  max-width: 42%;
  color: #fff;
  font-family: Arial, Helvetica, "Noto Sans KR", sans-serif;
  font-size: clamp(13px, 2.4vw, 18px);
  font-weight: 700;
  line-height: 1.25;
}

.tl-pager {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 36px 0 0;
  flex-wrap: wrap;
}
.tl-pager a,
.tl-pager span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid #E2E6EC;
  border-radius: 6px;
  background: #fff;
  color: #0F2744;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.tl-pager .current {
  background: #039478;
  border-color: #039478;
  color: #fff;
}

@media (max-width: 900px) {
  .tl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
}
@media (max-width: 560px) {
  .tl-grid { grid-template-columns: 1fr; gap: 16px; }
  .tl-card__kicker { font-size: 26px; }
  .tl-card__month { font-size: 72px; }
}