/* 共用品牌系统：竖向字章、宋体名称与拉丁字标保持固定的光学比例。 */
.brand.brand-yixiu {
  display: inline-flex;
  align-items: center;
  flex: none;
  gap: 13px;
  max-width: none;
  color: #233747;
  text-decoration: none;
  white-space: nowrap;
  font-size: 16px;
  font-weight: 400;
  line-height: 1;
}
.brand-yixiu .brand-mark {
  display: block;
  flex: none;
  width: 44px;
  height: 54px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  overflow: visible;
}
.brand-yixiu .brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  object-fit: contain;
}
.brand-yixiu .brand-wordmark {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
  padding: 1px 0 0;
}
.brand-yixiu .brand-name,
.brand.brand-yixiu .brand-tagline {
  color: inherit;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  font-size: 25px;
  font-weight: 500;
  letter-spacing: 3px;
  line-height: 1.08;
}
.brand-yixiu .brand-name {
  display: block;
  margin-right: -3px;
}
.brand-yixiu .brand-wordmark .brand-roman {
  display: block;
  color: #4d606c;
  font-family: "Helvetica Neue", "Arial", sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2.3px;
  line-height: 1;
}
.brand.brand-yixiu .brand-tagline {
  display: block;
  position: relative;
  top: -8px;
  margin-left: 5px;
  padding: 0 0 0 18px;
  border-left: 1px solid #d5dadd;
}
.footer .brand.brand-yixiu { margin-bottom: 20px; }
.dark .brand.brand-yixiu { color: #edf1f3; }
.dark .brand-yixiu .brand-roman { color: #b8c4ce; }
.dark .brand-yixiu .brand-tagline { border-color: #45535e; }
@media (max-width: 1500px) {
  .topbar:has(.account-summary) .brand-tagline { display: none; }
}
@media (max-width: 1050px) {
  .topbar:has(.back-link) .brand-tagline { display: none; }
}
@media (max-width: 760px) {
  .topbar .brand-yixiu { gap: 10px; }
  .topbar .brand-yixiu .brand-mark { width: 37px; height: 46px; }
  .topbar .brand-yixiu .brand-name { font-size: 22px; letter-spacing: 2px; }
  .topbar .brand-yixiu .brand-roman { font-size: 9px; letter-spacing: 2.1px; }
  .topbar .brand-yixiu .brand-wordmark { gap: 5px; }
  .topbar .brand-yixiu .brand-tagline { display: none; }
  .footer .brand.brand-yixiu { flex-wrap: wrap; justify-content: center; max-width: 100%; row-gap: 16px; }
  .footer .brand-yixiu .brand-name,
  .footer .brand.brand-yixiu .brand-tagline { font-size: 22px; letter-spacing: 2px; }
  .footer .brand.brand-yixiu .brand-tagline { flex-basis: 100%; top: 0; margin-left: 0; padding-left: 0; border: 0; white-space: normal; }
}