.footer-container {
  position: relative;
}

.footer-container .qr-codes {
  position: absolute;
  top: -70px;
  right: 100px;
  display: flex;
  gap: 16px;
  z-index: 1001;
}

.qr-code-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: transform var(--transition);
}

.qr-code-item:hover {
  transform: translateY(-2px);
}

.qr-code-image {
  width: 116px;
  height: 116px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  padding: 8px;
  background: #fff;
}

.qr-label {
  font-size: 12px;
  font-weight: 500;
  color: #fff;
  text-align: center;
  background: rgba(0, 0, 0, 0.6);
  padding: 4px 8px;
  border-radius: 4px;
}

.footer {
  background: var(--color-bg);
  color: #e2e8f0;
  padding: 60px 0 20px;
  margin-top: auto;
  position: relative;
}

.footer .max-content {
  padding-top: 40px;
}

/* 参考站 footer-brand 大字标 */
.flex-wrap.footer-logo.footer-brand {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 30px 0 60px;
  margin-bottom: 0;
  border-bottom: none;
}

.footer-brand-logo {
  width: clamp(60px, 8vw, 161px);
  height: clamp(60px, 8vw, 161px);
  flex-shrink: 0;
  aspect-ratio: 1 / 1;
}

.footer-brand-wordmark {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15em;
  flex: 1;
  justify-content: flex-end;
  min-width: 0;
}

.wordmark-char {
  font-family: var(--font-display);
  font-size: clamp(48px, 12vw, 120px);
  font-weight: 700;
  line-height: 1;
  color: rgba(76, 79, 107, 0.3);
  opacity: 0;
  transform: translateX(36px);
  animation: footer-slide-in 0.5s ease-out forwards;
  animation-delay: calc(var(--i, 0) * 80ms);
}

.footer-brand.in-view .footer-brand-logo {
  opacity: 0;
  transform: translateX(36px);
  animation: footer-slide-in 0.5s ease-out forwards;
}

@keyframes footer-slide-in {
  from {
    opacity: 0;
    transform: translateX(36px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .wordmark-char,
  .footer-brand.in-view .footer-brand-logo {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

@media (max-width: 768px) {
  .flex-wrap.footer-logo.footer-brand {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
    padding: 20px 0 40px;
  }

  .footer-brand-wordmark {
    justify-content: center;
  }
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 20px 0 40px;
}

.footer-column {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-text-secondary);
  padding: 17px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.column-title {
  width: 100%;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.title-indicator {
  width: 5px;
  height: 7px;
  background: var(--color-text-secondary);
  flex-shrink: 0;
}

.column-links li {
  margin-bottom: 4px;
}

.column-links a {
  color: #d2d3e0;
  font-size: 14px;
  transition: color var(--transition);
}

.column-links a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.copyright,
.filing-info {
  color: #a0aec0;
  font-size: 14px;
}

@media (max-width: 1200px) {
  .footer-container .qr-codes {
    right: 30px;
  }

  .qr-code-image {
    width: 100px;
    height: 100px;
  }
}

@media (max-width: 1024px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer-container .qr-codes {
    position: static;
    justify-content: center;
    margin: 32px 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .qr-code-image {
    width: 80px;
    height: 80px;
  }
}