.site-footer {
  background: var(--white);
  border-top: 1px solid #edf1f7;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 54px;
  padding: 90px 0 65px;
}

.footer-brand {
  padding-left: 14px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 14px;
  line-height: 23px;
}

.footer-brand p {
  width: 260px;
  margin-top: 25px;
}

.social {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 25px;
}

.social a {
  display: inline-block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #F1F5F9;
  /* 居中 */
  display: flex;
  align-items: center;
  justify-content: center;
}

.social a img {
  width: 16px;
  height: 16px;
  /* 透明 0.8 */
  opacity: 0.8;
}

.footer-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-col h4 {
  margin-bottom: 25px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
}

.footer-col a,
.footer-col p {
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 14px;
}

.footer-col img {
  width: 14px;
  height: 14px;
  margin-top: 4px;
  margin-right: 12px;
}

.footer-col a:hover {
  color: var(--blue);
}

.footer-col-flex {
  display: flex;
  align-items: flex-start;
  line-height: 20px;
}

.footer-bottom,
.simple-footer {
  color: #9aa6ba;
  font-size: 12px;
  text-align: center;
}

.footer-bottom {
  padding: 32px 0;
  border-top: 1px solid #edf1f7;
}

.footer-bottom p:first-child {
  margin-bottom: 16px;
}

.footer-bottom p span:first-child {
  margin-right: 24px;
}

.simple-footer {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
}