/* OUR OTHER SYSTEMS — 2×2 grid, compact cards */
.other-systems-section {
  padding: 12px 0 48px;
  background: linear-gradient(180deg, #ffffff 0%, #f4f7fb 100%);
}
.other-systems-section .container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 4%;
}
.other-systems-header h2 {
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: clamp(1.5rem, 2.8vw, 2rem);
}
.other-systems-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 40px;
  max-width: 1280px;
  margin: 0 auto;
}
.other-systems-grid .system-card {
  opacity: 0;
  transform: translateY(28px) scale(0.98);
  animation: systemCardIn 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
.other-systems-grid .system-card:nth-child(1) { animation-delay: 0.05s; }
.other-systems-grid .system-card:nth-child(2) { animation-delay: 0.14s; }
.other-systems-grid .system-card:nth-child(3) { animation-delay: 0.23s; }
.other-systems-grid .system-card:nth-child(4) { animation-delay: 0.32s; }
.other-systems-grid .system-card:nth-child(3):last-child {
  grid-column: auto;
  max-width: none;
  justify-self: stretch;
}
@keyframes systemCardIn {
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.system-card {
  background: linear-gradient(180deg, #ffffff 0%, #fafcff 100%);
  border-radius: 24px;
  overflow: hidden;
  box-shadow:
    0 22px 50px rgba(15, 23, 42, 0.1),
    0 0 0 1px rgba(66, 124, 208, 0.06);
  border: none;
  display: flex;
  flex-direction: column;
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.45s ease;
  position: relative;
  will-change: transform;
}
.system-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 45%;
  height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,0.55), transparent);
  transform: skewX(-12deg);
  animation: systemCardShimmer 5.5s ease-in-out infinite;
  pointer-events: none;
  z-index: 2;
}
.other-systems-grid .system-card:nth-child(2)::after { animation-delay: 1.2s; }
.other-systems-grid .system-card:nth-child(3)::after { animation-delay: 2.4s; }
.other-systems-grid .system-card:nth-child(4)::after { animation-delay: 3.6s; }
@keyframes systemCardShimmer {
  0%, 75% { left: -70%; opacity: 0; }
  85% { opacity: 1; }
  100% { left: 130%; opacity: 0; }
}
.system-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(145deg, rgba(66,124,208,0.15), rgba(59,178,60,0.12), rgba(254,185,30,0.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.system-card:hover {
  transform: translateY(-14px) scale(1.018) rotate(-0.4deg);
  box-shadow:
    0 36px 72px rgba(15, 23, 42, 0.16),
    0 12px 32px rgba(66, 124, 208, 0.14);
}
.system-card:hover::after {
  animation-duration: 2.2s;
}
.system-card__head::before {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  top: -40px;
  right: -30px;
  animation: systemOrbPulse 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes systemOrbPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 0.9; }
}
.system-card__head {
  padding: 22px 26px 18px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.system-card__head::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.18), transparent 55%);
  pointer-events: none;
}
.system-card--green .system-card__head { background: linear-gradient(135deg, #2d8f30 0%, #3bb23c 45%, #5fd660 100%); }
.system-card--blue .system-card__head { background: linear-gradient(135deg, #3266b5 0%, #427cd0 50%, #6ba3e8 100%); }
.system-card--gold .system-card__head { background: linear-gradient(135deg, #b8860b 0%, #feb91e 45%, #ffd54f 100%); }
.system-card--purple .system-card__head { background: linear-gradient(135deg, #5b21b6 0%, #7c3aed 50%, #a78bfa 100%); }
.system-card--purple .system-card__feat-icon { background: rgba(124, 58, 237, 0.12); color: #6d28d9; }
.system-card__btn--purple { background: linear-gradient(135deg, #5b21b6, #7c3aed); }
.system-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.15);
  color: #fff;
  position: relative;
  z-index: 1;
  animation: systemIconFloat 3.2s ease-in-out infinite;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.system-card:hover .system-card__icon {
  animation: systemIconPop 0.55s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes systemIconFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-5px) rotate(-3deg); }
}
@keyframes systemIconPop {
  0% { transform: scale(1); }
  45% { transform: scale(1.18) rotate(8deg); }
  100% { transform: scale(1.05) rotate(0deg); }
}
.system-card__label {
  display: block;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 6px;
  opacity: 0.92;
  color: rgba(255,255,255,0.92);
}
.system-card__title {
  font-family: 'Sora', Georgia, serif;
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  font-weight: 800;
  line-height: 1.22;
  margin: 0;
}
.system-card__divider {
  width: 56px;
  height: 3px;
  background: #feb91e;
  border-radius: 4px;
  margin-top: 12px;
}
.system-card__body {
  padding: 18px 26px 16px;
  flex: 1;
}
.system-card__body p {
  color: #64748b;
  line-height: 1.65;
  font-size: 0.86rem;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.system-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding: 0;
}
.system-card__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #334155;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.4;
  padding: 7px 10px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(248,250,252,0.9), rgba(241,245,249,0.6));
  border: 1px solid rgba(15,23,42,0.05);
}
.system-card__feat-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
}
.system-card--green .system-card__feat-icon { background: rgba(45,143,48,0.12); color: #2d8f30; }
.system-card--blue .system-card__feat-icon { background: rgba(66,124,208,0.12); color: #3266b5; }
.system-card--gold .system-card__feat-icon { background: rgba(184,134,11,0.12); color: #b8860b; }
.system-card__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 22px;
  text-decoration: none;
  font-weight: 800;
  font-size: 0.88rem;
  transition: filter 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.system-card__btn i {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.system-card:hover .system-card__btn {
  filter: brightness(1.06);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2);
}
.system-card:hover .system-card__btn i {
  transform: translateX(4px);
}
.system-card__btn--green { background: linear-gradient(135deg, #2d8f30, #3bb23c); }
.system-card__btn--blue { background: linear-gradient(135deg, #3266b5, #427cd0); }
.system-card__btn--gold { background: linear-gradient(135deg, #b8860b, #feb91e); color: #1a1a1a; }
.lang-ar .system-card__btn i { transform: scaleX(-1); }
@media (max-width: 768px) {
  .other-systems-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .other-systems-grid .system-card:nth-child(3):last-child {
    max-width: 100%;
    grid-column: auto;
  }
}