.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  border-bottom: 1px solid var(--line, #dfe7e2);
  background: rgba(255, 255, 255, 0.96);
  font-family: Inter, "Microsoft YaHei", system-ui, sans-serif;
}

.site-header * {
  box-sizing: border-box;
}

.site-header a {
  color: inherit;
  text-decoration: none;
}

.site-header-inner {
  width: 100%;
  max-width: 1180px;
  min-height: 68px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 18px;
}

.site-brand {
  min-width: 205px;
  display: flex;
  align-items: center;
  gap: 10px;
  justify-self: start;
}

.site-brand-mark {
  display: block;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border-radius: 10px;
  object-fit: cover;
}

.site-brand strong {
  display: block;
  margin: 0;
  color: var(--ink, #101513);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.2;
}

.site-brand small {
  display: block;
  margin-top: 3px;
  color: var(--muted, #66736c);
  font-size: 11px;
  font-weight: 500;
}

.site-nav {
  min-width: 0;
  display: flex;
  justify-content: center;
  justify-self: center;
  gap: 4px;
  overflow: visible;
}

.site-nav > a,
.site-nav-menu-trigger {
  padding: 10px 14px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted, #66736c);
  font-family: inherit;
  font-size: 16px;
  white-space: nowrap;
  cursor: pointer;
}

.site-nav > a:hover,
.site-nav-menu-trigger:hover,
.site-nav-menu.open .site-nav-menu-trigger {
  background: #f1f4f2;
  color: var(--ink, #101513);
}

.site-nav > a.active,
.site-nav-menu.active .site-nav-menu-trigger {
  background: var(--green-soft, #e9f7ef);
  color: var(--green-dark, #086b3b);
  font-weight: 800;
}

.site-nav-menu {
  position: relative;
}

.site-nav-menu-trigger {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.site-nav-chevron {
  display: block;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 0.16s ease;
}

.site-nav-menu.open .site-nav-chevron {
  transform: translateY(2px) rotate(225deg);
}

.site-nav-menu-panel {
  position: absolute;
  z-index: 60;
  top: calc(100% + 9px);
  left: 50%;
  display: grid;
  width: 270px;
  padding: 7px;
  border: 1px solid var(--line, #dfe7e2);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 44px rgba(21, 38, 29, 0.18);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, -5px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
}

.site-nav-menu-panel::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  width: 11px;
  height: 11px;
  border-top: 1px solid var(--line, #dfe7e2);
  border-left: 1px solid var(--line, #dfe7e2);
  background: #fff;
  transform: translate(-50%, 6px) rotate(45deg);
}

.site-nav-menu.open .site-nav-menu-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.site-nav-menu-panel a {
  display: grid;
  gap: 3px;
  padding: 10px 11px;
  border-radius: 5px;
}

.site-nav-menu-panel a:hover,
.site-nav-menu-panel a.active {
  background: var(--green-soft, #e9f7ef);
  color: var(--green-dark, #086b3b);
}

.site-nav-menu-panel strong {
  font-size: 13px;
}

.site-nav-menu-panel small {
  color: var(--muted, #66736c);
  font-size: 11px;
}

.site-community {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.site-community-label {
  margin-right: 2px;
  color: var(--muted, #66736c);
  font-size: 12px;
  font-weight: 800;
}

.site-contact-item {
  position: relative;
}

.site-contact-item::after {
  content: "";
  position: absolute;
  z-index: 49;
  top: 100%;
  right: 0;
  display: none;
  width: 218px;
  height: 14px;
}

.site-contact-item:hover::after,
.site-contact-item:focus-within::after {
  display: block;
}

.site-contact-trigger {
  display: flex;
  width: 34px;
  height: 34px;
  padding: 0;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  box-shadow: 0 3px 10px rgba(23, 32, 27, 0.12);
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.site-contact-wechat .site-contact-trigger {
  background: #07c160;
}

.site-contact-qq .site-contact-trigger {
  border: 2px solid #12b7f5;
  background: #fff;
}

.site-contact-trigger:hover,
.site-contact-trigger:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(23, 32, 27, 0.18);
  outline: 3px solid rgba(13, 138, 77, 0.14);
}

.site-contact-trigger svg {
  display: block;
  width: 21px;
  height: 21px;
  color: #fff;
  fill: currentColor;
  stroke: none;
}

.site-contact-qq .site-contact-trigger svg {
  width: 20px;
  height: 24px;
  color: #111;
}

.site-contact-card {
  position: absolute;
  z-index: 50;
  top: calc(100% + 12px);
  right: 0;
  width: 218px;
  padding: 14px;
  border: 1px solid var(--line, #dfe7e2);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(21, 38, 29, 0.18);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
}

.site-contact-card::before {
  content: "";
  position: absolute;
  right: 10px;
  bottom: 100%;
  width: 12px;
  height: 12px;
  border-top: 1px solid var(--line, #dfe7e2);
  border-left: 1px solid var(--line, #dfe7e2);
  background: #fff;
  transform: translateY(6px) rotate(45deg);
}

.site-contact-item:hover .site-contact-card,
.site-contact-item:focus-within .site-contact-card {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.site-contact-card > strong {
  display: block;
  margin-bottom: 10px;
  color: var(--ink, #101513);
  font-size: 14px;
  text-align: center;
}

.site-contact-qr,
.site-contact-qr-empty {
  display: flex;
  width: 188px;
  height: 188px;
  align-items: center;
  justify-content: center;
  border: 1px solid #e3ebe6;
  border-radius: 6px;
  background: #f7faf8;
}

.site-contact-qr {
  object-fit: contain;
}

.site-contact-qr-empty {
  color: var(--muted, #66736c);
  font-size: 12px;
}

.site-contact-account {
  display: flex;
  margin-top: 10px;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--ink, #101513);
  font-size: 13px;
  line-height: 1.55;
}

.site-contact-account-main {
  min-width: 0;
  overflow-wrap: anywhere;
  cursor: text;
  user-select: text;
}

.site-contact-account b {
  margin-right: 5px;
  color: var(--muted, #66736c);
  font-size: 12px;
}

.site-contact-copy {
  display: inline-flex;
  min-width: 54px;
  height: 30px;
  padding: 0 8px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid #c8dbd0;
  border-radius: 6px;
  background: #f4faf6;
  color: var(--green-dark, #086b3b);
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
}

.site-contact-copy:hover,
.site-contact-copy:focus-visible {
  border-color: var(--green, #0d8a4d);
  background: var(--green-soft, #e9f7ef);
  outline: 0;
}

.site-contact-copy.is-copied {
  border-color: #8fc8a6;
  background: #e7f7ed;
}

.site-contact-copy.is-copy-failed {
  border-color: #e5aaa6;
  background: #fff1f0;
  color: #a8322c;
}

.site-contact-copy svg {
  display: block;
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (max-width: 980px) {
  .site-brand {
    min-width: auto;
  }

  .site-brand small,
  .site-community-label {
    display: none;
  }
}

@media (max-width: 680px) {
  .site-header-inner {
    min-height: 0;
    padding: 10px 14px;
    display: flex;
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .site-brand {
    flex: 1;
  }

  .site-community {
    margin-left: auto;
  }

  .site-nav {
    order: 3;
    flex-basis: 100%;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
  }

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

  .site-nav > a,
  .site-nav-menu-trigger {
    padding: 8px 11px;
    font-size: 13px;
  }

  .site-nav-menu-panel {
    position: fixed;
    top: 104px;
    right: 14px;
    left: 14px;
    width: auto;
    transform: translateY(-5px);
  }

  .site-nav-menu-panel::before {
    right: 18px;
    left: auto;
  }

  .site-nav-menu.open .site-nav-menu-panel {
    transform: translateY(0);
  }
}

@media (max-width: 380px) {
  .site-header-inner {
    gap: 10px;
  }

  .site-brand-mark {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }

  .site-brand strong {
    font-size: 15px;
  }

  .site-contact-trigger {
    width: 32px;
    height: 32px;
  }

  .site-contact-card {
    width: min(218px, calc(100vw - 28px));
  }

  .site-contact-qr,
  .site-contact-qr-empty {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }
}