footer.main-footer {
  background-color: #083B4C;
  color: #FFFFFF;
  position: relative;
  padding-top: 50px;
}
.footer-top-angle {
  position: absolute;
  top: -45px;
  left: 0;
  width: 100%;
  height: 46px;
  background: #00A89E;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 50px;
  margin-bottom: 20px;
  position: relative;
}
.footer-brand h3 {
  font-family: 'Noto Serif TC', serif;
  font-size: 28px;
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 16px;
  color: #A0AEC0;
  line-height: 1.8;
  margin-bottom: 24px;
}
.footer-social-links {
  display: flex;
  gap: 14px;
}
.social-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 22px;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.social-btn:hover {
  background: #00A89E;
  border-color: #00A89E;
  transform: translateY(-3px);
  color: #FFFFFF;
}
.footer-col-title {
  font-family: 'Noto Serif TC', serif;
  font-size: 20px;
  font-weight: 700;
  color: #00B4B6;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 35px;
  height: 3px;
  background-color: #FF6B35;
  border-radius: 2px;
}
.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0px;
  padding: 0px;
  color: #CBD5E0;
}
.footer-links-list li a {
  font-size: 16px;
  color: #CBD5E0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.footer-links-list li a:hover {
  color: #00FFEF;
  transform: translateX(4px);
}
.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 15px;
  color: #718096;
  position: relative;
  padding-bottom: 5px;
}
.footer-bottom-bar a{
  color: #718096;
  text-decoration: none;
}


/* ===================================================
   頁尾響應式設計 (Responsive Breakdown)
=================================================== */
@media (max-width: 1400px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }
}