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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  width: 100%;
  height: var(--header-height, 4.7rem);
  padding: 0 var(--page-x, clamp(1.5rem, 8.4vw, 10rem));
  background: transparent;
  color: #f8fbff;
  transition:
    top 480ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)),
    background 420ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)),
    color 420ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)),
    box-shadow 420ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.site-header::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  background: rgba(0, 12, 28, 0.58);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 360ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), visibility 360ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.site-header>* {
  position: relative;
  z-index: 2;
}

.site-header.is-solid {
  background: rgba(255, 255, 255, 0.96);
  color: #1d2530;
  box-shadow: 0 0.25rem 1.2rem rgba(0, 18, 54, 0.12);
}

.site-header.is-scroll-hidden {
  top: calc(var(--header-height, 4.7rem) * -1);
  pointer-events: none;
}

@media (hover: hover) and (pointer: fine) {
  .site-header:hover,
  .site-header:focus-within {
    background: rgba(255, 255, 255, 0.97);
    color: #1d2530;
    box-shadow: 0 0.25rem 1.2rem rgba(0, 18, 54, 0.12);
  }

  .site-header:hover .search-icon,
  .site-header:focus-within .search-icon {
    background-image: url("../image/sunlight-home/icons/header-search-b.png");
  }

  .site-header:hover .globe-icon,
  .site-header:focus-within .globe-icon {
    background-image: url("../image/sunlight-home/icons/header-language-b.png");
  }
}

.site-header.is-search-open {
  background: rgba(255, 255, 255, 0.98);
  color: #1d2530;
  box-shadow: 0 0.25rem 1.2rem rgba(0, 18, 54, 0.12);
}

.brand-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: clamp(8.8rem, 11.8vw, 14.125rem);
  min-width: 8.8rem;
}

.brand-logo {
  width: 100%;
  height: auto;
  transition: opacity 320ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.site-header.is-solid .brand-logo-white {
  opacity: 0;
}

/*
 * 暂未启用：当前页面直接输出所需颜色的 logo，不需要白/蓝双图切换。
 * 模板站如果恢复双 logo 结构，可重新启用这一组状态规则。
 *
.brand-logo-blue {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.site-header.is-solid .brand-logo-blue {
  opacity: 1;
}

.site-header.is-menu-open .brand-logo-white {
  opacity: 0;
}

.site-header.is-menu-open .brand-logo-blue {
  opacity: 1;
} */

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(1.1rem, 2.8vw, 2.7rem);
  flex: 1;
  min-width: 0;
  margin-left: 4rem;
}

.nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: var(--header-height, 4.7rem);
}

.nav-link,
.nav-sub-link,
.tool-link {
  transition: color 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), transform 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), opacity 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), filter 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: var(--header-height, 4.7rem);
  white-space: nowrap;
  font-size: clamp(0.78rem, 0.82vw, 0.95rem);
  font-weight: 500;
}

.nav-link::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 0.28rem;
  background: var(--color-blue, #006fff);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.nav-link:hover,
.nav-link.is-active,
.nav-item:hover>.nav-link,
.nav-item:focus-within>.nav-link {
  color: var(--color-blue, #006fff);
  opacity: 1;
}

.nav-link:hover::after,
.nav-link.is-active::after,
.nav-item:hover>.nav-link::after,
.nav-item:focus-within>.nav-link::after {
  transform: scaleX(1);
}

.nav-submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 35;
  min-width: 5.25rem;
  padding: 0.58rem 0;
  background: rgba(255, 255, 255, 0.98);
  color: #1c2633;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, 0.55rem);
  transition: opacity 240ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), visibility 240ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), transform 240ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.nav-item:hover>.nav-submenu,
.nav-item:focus-within>.nav-submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.nav-sub-link {
  display: block;
  padding: 0.34rem 0.9rem;
  color: #202b38;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
  white-space: nowrap;
}

.nav-sub-link:hover,
.nav-sub-link:focus-visible {
  color: var(--color-blue, #006fff);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.58rem;
  margin-left: 2rem;
  font-weight: 700;
}

.tool-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.55rem;
  height: 1.55rem;
}

.header-search-toggle {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.tool-separator {
  color: currentColor;
  opacity: 0.72;
}

.tool-icon {
  position: relative;
  width: 1.25rem;
  height: 1.25rem;
  flex: 0 0 auto;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  color: currentColor;
}

.search-icon {
  background-image: url("../image/sunlight-home/icons/header-search-w.png");
}

.globe-icon {
  background-image: url("../image/sunlight-home/icons/header-language-w.png");
}

.site-header.is-solid .search-icon,
.site-header.is-search-open .search-icon,
.site-header.is-menu-open .search-icon {
  background-image: url("../image/sunlight-home/icons/header-search-b.png");
}

.site-header.is-solid .globe-icon,
.site-header.is-search-open .globe-icon,
.site-header.is-menu-open .globe-icon {
  background-image: url("../image/sunlight-home/icons/header-language-b.png");
}

.site-header .hover-lift {
  will-change: transform;
}

.site-header .hover-lift:hover {
  transform: translateY(-0.16rem);
  filter: drop-shadow(0 0 0.75rem rgba(44, 188, 255, 0.36));
}

.header-search-panel {
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  z-index: 1;
  padding: 22px max(2rem, calc((100vw - 1600px) / 2));
  border-top: 1px solid rgba(0, 73, 158, 0.08);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 18px 38px rgba(0, 28, 68, 0.16);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-14px);
  transition:
    opacity 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)),
    visibility 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)),
    transform 320ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.site-header.is-search-open .header-search-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.header-search-inner {
  position: relative;
  display: flex;
  align-items: center;
  width: min(100%, 900px);
  height: 54px;
  margin: 0 auto;
  border: 1px solid rgba(0, 91, 196, 0.22);
  border-radius: 4px;
  background: #f7faff;
  transition:
    border-color 220ms ease,
    background 220ms ease,
    box-shadow 220ms ease;
}

.header-search-inner:focus-within {
  border-color: #0875e1;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(8, 117, 225, 0.12);
}

.header-search-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.header-search-leading-icon {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  margin-left: 20px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.header-search-input {
  min-width: 0;
  height: 100%;
  flex: 1;
  padding: 0 18px 0 14px;
  border: 0;
  outline: 0;
  background: transparent;
  color: #1a2a3a;
  font: inherit;
  font-size: 16px;
}

.header-search-input::placeholder {
  color: #7a8795;
}

.header-search-input::-webkit-search-cancel-button {
  cursor: pointer;
}

.header-search-submit {
  align-self: stretch;
  min-width: 92px;
  padding: 0 24px;
  border: 0;
  background: #0875e1;
  color: #fff;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 220ms ease;
}

.header-search-submit:hover,
.header-search-submit:focus-visible {
  background: #0064c8;
  outline: none;
}

.header-search-input.is-invalid::placeholder {
  color: #c44141;
}

.mobile-menu-toggle {
  display: none;
  position: relative;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-left: 0.55rem;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 0.38rem;
  background: rgba(255, 255, 255, 0.08);
  color: currentColor;
  cursor: pointer;
  transition: border-color 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), background 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), transform 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.mobile-menu-toggle span {
  position: absolute;
  left: 50%;
  width: 1.24rem;
  height: 0.12rem;
  border-radius: 1rem;
  background: currentColor;
  transform: translate(-50%, 0);
  transition: transform 280ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), opacity 220ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
}

.mobile-menu-toggle span:nth-child(1) {
  transform: translate(-50%, -0.42rem);
}

.mobile-menu-toggle span:nth-child(3) {
  transform: translate(-50%, 0.42rem);
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus-visible {
  border-color: rgba(57, 216, 255, 0.74);
  background: rgba(0, 111, 255, 0.12);
  transform: translateY(-0.08rem);
  outline: none;
}

.site-header.is-solid .mobile-menu-toggle,
.site-header.is-menu-open .mobile-menu-toggle {
  border-color: rgba(0, 111, 255, 0.22);
  background: rgba(0, 111, 255, 0.08);
}

.site-header.is-menu-open .mobile-menu-toggle span:nth-child(1) {
  transform: translate(-50%, 0) rotate(45deg);
}

.site-header.is-menu-open .mobile-menu-toggle span:nth-child(2) {
  opacity: 0;
  transform: translate(-50%, 0) scaleX(0.35);
}

.site-header.is-menu-open .mobile-menu-toggle span:nth-child(3) {
  transform: translate(-50%, 0) rotate(-45deg);
}

/* page header */
.header-container {
  height: 80px;
  --header-height: 80px;
  padding-right: max(2rem, calc((100vw - 1600px) / 2));
  padding-left: max(2rem, calc((100vw - 1600px) / 2));
  background: transparent;
}

.header-container .brand-link {
  width: 220px;
}

.header-container .site-nav {
  gap: clamp(1.2rem, 3.55vw, 4.3rem);
  margin-left: 8rem;
}

.header-container .nav-link {
  font-size: 18px;
}

.header-container.is-solid {
  background: rgba(255, 255, 255, 0.97);
}

.header-container.is-solid:not(.is-menu-open) .mobile-menu-toggle {
  border-color: #0875e1;
  background: #0875e1;
  color: #fff;
}

@media (max-width: 1280px) {
  .site-nav {
    gap: 1.1rem;
    margin-left: 2rem;
  }

  .header-container .site-nav {
    gap: 1.1rem;
    margin-left: 2rem;
  }
}

@media (max-width: 980px) {

  html.is-mobile-menu-open,
  html.is-mobile-menu-open body {
    overflow: hidden;
  }

  .nav-item {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    min-height: 0;
    border-bottom: 1px solid rgba(0, 60, 120, 0.1);
  }

  .nav-submenu {
    position: static;
    min-width: 0;
    max-height: 0;
    padding: 0;
    overflow: hidden;
    color: inherit;
    background: transparent;
    opacity: 0;
    visibility: visible;
    pointer-events: none;
    transform: none;
    transition: max-height 320ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)), opacity 260ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
  }

  .nav-item:hover>.nav-submenu,
  .nav-item:focus-within>.nav-submenu {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    transform: none;
  }

  .nav-item.is-submenu-open>.nav-submenu,
  .nav-item.is-submenu-open:hover>.nav-submenu,
  .nav-item.is-submenu-open:focus-within>.nav-submenu {
    max-height: 24rem;
    opacity: 1;
    pointer-events: auto;
  }

  .header-container {
    height: 74px;
    --header-height: 74px;
    --contact-mobile-nav-accent: #6aabff;
    padding: 0 1.5rem;
  }

  .header-container.is-menu-open {
    background: transparent;
    color: #fff;
    box-shadow: none;
  }

  .header-container.is-menu-open::before {
    background:
      linear-gradient(180deg, rgba(0, 5, 17, 0.16) 0%, rgba(0, 16, 48, 0.08) 58%, rgba(0, 40, 96, 0.58) 100%),
      url("../image/sunlight-home/images/contact/contact-flow.jpg") center / cover no-repeat;
    opacity: 1;
    visibility: visible;
  }

  .header-container .brand-link {
    width: 158px;
  }

  .header-container .header-tools {
    display: flex;
    margin-left: auto;
  }

  .header-container .header-tools .tool-separator,
  .header-container .header-tools .tool-link:not(.header-search-toggle) {
    display: none;
  }

  .header-container .header-search-toggle {
    width: 40px;
    height: 40px;
  }

  .header-container .site-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    width: 100%;
    min-width: 0;
    margin: 0;
    padding: 18px 32px 32px;
    overflow-y: auto;
    background: transparent;
    box-shadow: none;
    clip-path: inset(0 0 100% 0);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: none;
    transition:
      opacity 320ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)),
      visibility 320ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1)),
      clip-path 420ms var(--ease-out, cubic-bezier(0.22, 1, 0.36, 1));
    overscroll-behavior: contain;
  }

  .header-container.is-menu-open .site-nav {
    clip-path: inset(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .header-container .nav-item {
    width: 100%;
    flex: 0 0 auto;
    border-bottom: 0;
  }

  .header-container .nav-link {
    justify-content: center;
    min-height: 58px;
    color: #fff;
    font-size: 18px;
    font-weight: 400;
    line-height: 1.35;
    opacity: 1;
    text-align: center;
  }

  .header-container .nav-item.is-current>.nav-link {
    color: var(--contact-mobile-nav-accent);
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.95);
  }

  .header-container .has-submenu>.nav-link {
    padding-right: 0;
  }

  .header-container .has-submenu>.nav-link::before,
  .header-container .nav-link::after {
    display: none;
  }

  .header-container .nav-sub-link {
    padding: 9px 0;
    border-left: 0;
    color: #fff;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    text-align: center;
  }

  .header-container .nav-item.is-submenu-open .nav-submenu {
    width: calc(100% + 64px);
    margin: 0 -32px 12px;
    padding: 10px 32px 14px;
    background: rgba(0, 0, 0, 0.9);
  }

  .header-container .nav-sub-link:hover,
  .header-container .nav-sub-link:focus-visible {
    color: var(--contact-mobile-nav-accent);
  }

  .header-container .mobile-menu-toggle {
    display: inline-flex;
    width: 40px;
    height: 40px;
    margin-left: 2px;
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .header-container.is-menu-open .mobile-menu-toggle {
    border: 0;
    background: transparent;
  }

  .header-container .mobile-menu-toggle span {
    width: 22px;
    height: 2px;
    background: currentColor;
  }

  .header-container.is-menu-open .mobile-menu-toggle span:nth-child(1) {
    transform: translate(-50%, -7px);
  }

  .header-container.is-menu-open .mobile-menu-toggle span:nth-child(2) {
    opacity: 1;
    transform: translate(-50%, 0);
  }

  .header-container.is-menu-open .mobile-menu-toggle span:nth-child(3) {
    transform: translate(-50%, 7px);
  }
  .header-container .header-search-panel {
    padding: 16px 24px 18px;
  }

  .header-container .header-search-inner {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .header-container {
    height: 56px;
    --header-height: 56px;
    padding: 0 10px;
  }

  .header-container .brand-link {
    width: 96px;
    min-width: 96px;
  }
  .header-container .header-search-panel {
    padding: 12px 10px 14px;
  }

  .header-container .header-search-inner {
    height: 48px;
  }

  .header-container .header-search-leading-icon {
    width: 18px;
    height: 18px;
    flex-basis: 18px;
    margin-left: 14px;
  }

  .header-container .header-search-input {
    padding: 0 10px;
    font-size: 16px;
  }

  .header-container .header-search-submit {
    min-width: 64px;
    padding: 0 14px;
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {

  .site-header,
  .site-header::before,
  .site-nav,
  .nav-submenu,
  .header-search-panel,
  .header-search-inner,
  .mobile-menu-toggle,
  .mobile-menu-toggle span {
    transition-duration: 1ms !important;
  }
}