/* 全站共用：品牌、导航、捐赠按钮始终位于同一排。 */
.header .header-inner {
  width: 100%;
  max-width: 1600px;
  height: auto;
  min-height: 76px;
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 22px;
}

.header .brand {
  min-width: 0;
  flex: 0 0 auto;
  margin: 0;
  text-decoration: none;
}

.header .nav {
  min-width: 0;
  flex: 1 1 auto;
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: nowrap;
  gap: clamp(12px, 1.2vw, 26px);
  overflow: visible;
}

.header .nav::-webkit-scrollbar {
  display: none;
}

.header .nav > a,
.header .nav-dropdown {
  flex: 0 0 auto;
}

.header .nav a {
  white-space: nowrap;
}

.header .donate {
  display: flex;
  width: 148px;
  height: 48px;
  flex: 0 0 148px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 26px;
}

.header .donate img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: fill;
}

@media (max-width: 1450px) {
  .header .header-inner {
    gap: 14px;
  }

  .header .nav {
    gap: 15px;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .header .nav a {
    font-size: 14px;
    letter-spacing: 0;
  }

  .header .brand-name,
  .header .brand .name {
    font-size: 18px;
    letter-spacing: 1px;
  }

  .header .brand-en,
  .header .brand .en {
    max-width: 340px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .header .donate {
    width: 124px;
    height: 43px;
    flex-basis: 124px;
  }

  /* 窄屏导航横滑时，避免下拉菜单被滚动容器裁切成残片。 */
  .header .nav-dropdown-menu {
    display: none;
  }
}

@media (max-width: 1000px) {
  .header .header-inner {
    min-height: 65px;
    gap: 12px;
    padding: 7px 16px;
  }

  .header .brand {
    gap: 9px;
  }

  .header .logo,
  .header .brand .logo {
    height: 39px;
  }

  .header .brand-name,
  .header .brand .name {
    font-size: 16px;
  }

  .header .brand-en,
  .header .brand .en {
    display: none;
  }

  .header .nav {
    order: 0;
    width: auto;
    margin-left: 0;
    justify-content: flex-start;
    flex-wrap: nowrap;
    gap: 18px;
  }

  .header .nav a {
    font-size: 13px;
  }

  .header .donate {
    width: 110px;
    height: 40px;
    flex-basis: 110px;
  }

}

@media (max-width: 700px) {
  .topbar .slogan {
    display: none;
  }

  .topbar-inner {
    justify-content: center;
  }

  .header .header-inner {
    min-height: 56px;
    gap: 9px;
    padding: 7px 12px;
  }

  .header .logo,
  .header .brand .logo {
    height: 35px;
  }

  .header .brand-name,
  .header .brand .name {
    max-width: 132px;
    overflow: hidden;
    font-size: 13px;
    letter-spacing: 0;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .header .nav {
    gap: 16px;
    padding: 4px 0;
  }

  .header .nav a {
    font-size: 12px;
  }

  .header .donate {
    width: 88px;
    height: 34px;
    flex-basis: 88px;
  }
}

@media (max-width: 540px) {
  .header .brand-name,
  .header .brand .name {
    display: none;
  }

  .header .brand {
    gap: 0;
  }
}

@media (max-width: 420px) {
  .topbar-right > span:first-child {
    display: none;
  }

  .header .header-inner {
    gap: 8px;
    padding-right: 9px;
    padding-left: 9px;
  }

  .header .logo,
  .header .brand .logo {
    height: 32px;
  }

  .header .donate {
    width: 77px;
    height: 31px;
    flex-basis: 77px;
  }
}