/* 主导航：左右两端留出等宽空间，中间菜单始终居中。 */
.medical-layout .site-header {
  min-height: 72px;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid rgba(232, 222, 217, .65);
  box-shadow: 0 2px 18px rgba(61, 47, 42, .035);
  transition: background .42s ease, border-color .42s ease, box-shadow .42s ease;
}
.medical-layout .nav-inner {
  width: min(1280px, calc(100% - 64px));
  height: 72px;
  grid-template-columns: minmax(210px, 1fr) auto minmax(210px, 1fr);
  gap: 24px;
  transition: width .5s cubic-bezier(.22, 1, .36, 1), height .5s cubic-bezier(.22, 1, .36, 1), margin .5s cubic-bezier(.22, 1, .36, 1), padding .5s cubic-bezier(.22, 1, .36, 1), border-radius .5s cubic-bezier(.22, 1, .36, 1), box-shadow .5s ease, background .5s ease;
}
.medical-layout .site-header .brand {
  position: relative;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 48px;
  line-height: 1;
}
.medical-layout .brand-mark { width: 52px; height: 48px; }
.medical-layout .site-header .brand-mark img { width: 135px; }
.medical-layout .brand-wordmark { display: inline-flex; align-items: center; height: 48px; font-size: 20px; line-height: 1; letter-spacing: .5px; }
.medical-layout .site-nav { align-self: center; align-items: center; gap: clamp(24px, 3.2vw, 48px); }
.medical-layout .site-nav a {
  height: 44px;
  min-width: 88px;
  padding: 0 18px;
  justify-content: center;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  white-space: nowrap;
  color: #303b42;
  isolation: isolate;
  overflow: hidden;
  background-color: transparent;
  box-shadow: 0 0 0 rgba(255, 105, 37, 0);
  transition: color .2s ease, background-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.medical-layout .site-nav a[aria-current] {
  color: #e95620;
  font-weight: 600;
}
.medical-layout .site-nav a::after,
.medical-layout .site-nav a[aria-current]::after {
  left: 50%; bottom: 2px; width: 35px; height: 3px;
  border-radius: 999px; background: #f35d24;
  opacity: 0;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform .2s ease, opacity .2s ease;
}
.medical-layout .site-nav a[aria-current]::after { opacity: 1; transform: translateX(-50%) scaleX(1); }
.medical-layout .site-nav a:hover,
.medical-layout .site-nav a:focus-visible {
  color: #e95620;
  background-color: rgba(255, 105, 37, .035);
  box-shadow: 0 0 22px 2px rgba(255, 105, 37, .09), inset 0 0 18px rgba(255, 105, 37, .025);
}
.medical-layout .site-nav a:hover::after,
.medical-layout .site-nav a:focus-visible::after { opacity: 1; transform: translateX(-50%) scaleX(1); }
.medical-layout .nav-products { position: relative; height: 44px; display: flex; align-items: center; }
/* 触屏设备直接进入产品页，悬浮子菜单只在支持悬停的宽屏设备上启用。 */
.medical-layout .product-submenu { display: none; }

/* 产品服务二级入口：统一毛玻璃底座承托四个轻量胶囊。 */
@media (hover: hover) and (min-width: 701px) {
  .medical-layout .product-submenu {
    position: absolute;
    z-index: 120;
    top: calc(100% + 26px);
    left: 50%;
    width: min(770px, calc(100vw - 48px));
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    padding: 10px 16px;
    border: 1px solid rgba(255, 255, 255, .95);
    border-radius: 999px;
    background: rgba(238, 243, 247, .90);
    -webkit-backdrop-filter: blur(24px) saturate(115%);
    backdrop-filter: blur(24px) saturate(115%);
    box-shadow: 0 8px 24px rgba(35, 52, 64, .16), 0 0 0 1px rgba(112, 132, 148, .12), inset 0 1px 0 #fff;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-50%);
    transform-origin: 50% 0;
    transition: opacity .24s ease, visibility 0s linear .42s;
  }
  /* 填补主菜单与胶囊之间的移动区域，避免鼠标经过间隙时提前收起。 */
  .medical-layout .product-submenu::before { content: ''; position: absolute; right: 0; bottom: 100%; left: 0; height: 30px; }
  .medical-layout .product-submenu a {
    height: 46px;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 16px;
    border: 1px solid rgba(218, 226, 232, .85);
    border-radius: 999px;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 2px 5px rgba(35, 52, 64, .045);
    color: #293e4b;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    white-space: nowrap;
    opacity: 0;
    overflow: visible;
    transition: transform .4s cubic-bezier(.65,0,.35,1), opacity .14s ease .24s, color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  }
  /* 收起态让四项回到菜单中心，形成从两侧向“产品服务”下方汇拢的轨迹。 */
  .medical-layout .product-submenu a:nth-child(1) { transform: translateX(calc(150% + 18px)) scale(.82); }
  .medical-layout .product-submenu a:nth-child(2) { transform: translateX(calc(50% + 6px)) scale(.88); }
  .medical-layout .product-submenu a:nth-child(3) { transform: translateX(calc(-50% - 6px)) scale(.88); }
  .medical-layout .product-submenu a:nth-child(4) { transform: translateX(calc(-150% - 18px)) scale(.82); }
  .medical-layout .product-submenu a::after { display: none; }
  .medical-layout .product-submenu a + a::before {
    content: '';
    position: absolute;
    left: -7px;
    top: 50%;
    width: 1px;
    height: 22px;
    background: rgba(151, 169, 182, .32);
    transform: translateY(-50%);
    pointer-events: none;
  }
  .medical-layout .product-submenu a svg {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
    color: #607887;
    transition: color .2s ease;
  }
  .medical-layout .product-submenu a:hover,
  .medical-layout .product-submenu a:focus-visible,
  .medical-layout .product-submenu a:active { color: #e95620; background: #fff9f5; border-color: rgba(249,115,22,.16); box-shadow: 0 4px 14px rgba(249,115,22,.06), inset 0 0 12px rgba(249,115,22,.045); }
  .medical-layout .product-submenu a:hover svg,
  .medical-layout .product-submenu a:focus-visible svg,
  .medical-layout .product-submenu a:active svg { color: #e95620; }
  .medical-layout .product-submenu a:focus-visible { outline: 2px solid #df5725; outline-offset: 3px; }
  .medical-layout .site-header.is-at-top .nav-products:hover .product-submenu,
  .medical-layout .site-header.is-at-top .nav-products:focus-within .product-submenu {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%);
    transition-delay: 0s;
  }
  .medical-layout .site-header.is-at-top .nav-products:hover .product-submenu a,
  .medical-layout .site-header.is-at-top .nav-products:focus-within .product-submenu a {
    opacity: 1;
    transform: translateX(0) scale(1);
    transition-delay: 0s;
  }
}
.medical-layout .nav-contact {
  position: relative;
  min-height: 44px;
  padding: 5px 7px 5px 24px;
  gap: 14px;
  border: 1px solid transparent;
  background: linear-gradient(110deg, #ff983f, #e94320);
  color: #fff;
  box-shadow: 0 5px 14px rgba(221, 77, 31, .12);
  font-size: 15px;
  font-weight: 600;
  isolation: isolate;
  overflow: hidden;
}
.medical-layout .site-header .nav-contact > span:not(.nav-liquid-burst) {
  width: 30px; height: 30px;
  color: #fff; background: rgba(255,255,255,.18);
}
.medical-layout .site-header .nav-contact .ui-icon { width: 16px; height: 16px; }
.medical-layout .nav-contact:hover { color: #fff; border-color: transparent; background: linear-gradient(110deg, #ff8a32, #df3e1a); box-shadow: 0 7px 18px rgba(221, 77, 31, .2); }
.medical-layout .site-header .nav-contact:hover > span:not(.nav-liquid-burst) { background: rgba(255,255,255,.25); }

/* 首页向下滚动后，整条导航收成悬浮胶囊。 */
.medical-layout.home-page:not(.service-page):not(.company-page) .site-header.is-capsule {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  pointer-events: none;
}
.medical-layout.home-page .site-header.is-capsule .nav-inner {
  width: min(1180px, calc(100% - 40px));
  height: 78px;
  margin-top: 12px;
  padding: 0 32px;
  border: 1px solid rgba(255,255,255,.95);
  border-radius: 999px;
  background: rgba(255,255,255,.94);
  box-shadow: 0 14px 38px rgba(39, 45, 57, .11), inset 0 1px 0 #fff;
  pointer-events: auto;
}
.medical-layout.home-page .site-header.is-capsule .nav-contact {
  border-color: #f36326;
  background: #fff;
  color: #e95820;
  box-shadow: none;
}
.medical-layout.home-page .site-header.is-capsule .nav-contact > span:not(.nav-liquid-burst) { background: linear-gradient(135deg, #ff8e35, #f05b1e); color: #fff; }
.medical-layout.home-page .site-header.is-capsule .nav-contact:hover { background: #fff7f3; }

/* 点击位置生出一团柔和色块，扩散后融入按钮本身。 */
.medical-layout .site-header .nav-liquid-burst {
  position: absolute;
  left: var(--liquid-x); top: var(--liquid-y);
  width: 24px; height: 24px;
  border-radius: 42% 58% 62% 38% / 51% 35% 65% 49%;
  background: rgba(249, 111, 53, .22);
  pointer-events: none;
  z-index: -1;
  transform: translate(-50%, -50%) scale(.2) rotate(0);
  animation: nav-liquid-flow .6s cubic-bezier(.16, 1, .3, 1) both;
}
.medical-layout .nav-contact .nav-liquid-burst { background: rgba(255,255,255,.38); }
.medical-layout.home-page .site-header.is-capsule .nav-contact .nav-liquid-burst { background: rgba(249, 111, 53, .22); }
@keyframes nav-liquid-flow {
  45% { border-radius: 58% 42% 36% 64% / 38% 63% 37% 62%; opacity: 1; }
  100% { border-radius: 50%; transform: translate(-50%, -50%) scale(11) rotate(90deg); opacity: 0; }
}

@media (max-width: 1100px) {
  .medical-layout .nav-inner { width: calc(100% - 40px); grid-template-columns: minmax(160px, 1fr) auto minmax(160px, 1fr); gap: 8px; }
  .medical-layout .site-nav { gap: 4px; }
  .medical-layout .site-nav a { min-width: 76px; padding: 0 10px; font-size: 14px; }
  .medical-layout .brand-wordmark { font-size: 18px; }
  .medical-layout .nav-contact { padding-left: 13px; gap: 7px; font-size: 13px; }
  .medical-layout.home-page .site-header.is-capsule .nav-inner { padding: 0 18px; }
}
@media (max-width: 700px) {
  .medical-layout .site-header { min-height: 64px; }
  .medical-layout .nav-inner { width: calc(100% - 16px); height: 64px; min-height: 64px; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; grid-template-rows: 1fr; align-items: center; gap: clamp(4px, 1.8vw, 10px); padding: 0; }
  .medical-layout .site-header .brand { grid-column: 1; grid-row: 1; min-height: 28px; gap: 3px; flex: 0 0 auto; }
  .medical-layout .brand-mark, .medical-layout .brand-wordmark { height: 28px; }
  .medical-layout .brand-mark { width: 27px; }
  .medical-layout .site-header .brand-mark img { width: 70px; }
  .medical-layout .brand-wordmark { font-size: 13px; letter-spacing: 0; }
  .medical-layout .site-nav { grid-column: 2; grid-row: 1; width: 100%; min-width: 0; align-self: center; justify-self: stretch; justify-content: center; gap: clamp(2px, 1.2vw, 8px); height: 34px; }
  .medical-layout .nav-products { height: 34px; }
  .medical-layout .product-submenu { display: none; }
  .medical-layout .site-nav a { height: 34px; min-width: 0; padding: 0 clamp(4px, 1.4vw, 7px); font-size: 12px; letter-spacing: 0; white-space: nowrap; }
  .medical-layout .site-nav a[aria-current] { font-weight: 500; }
  .medical-layout .site-nav a::after, .medical-layout .site-nav a[aria-current]::after { bottom: 3px; width: 20px; height: 2px; }
  .medical-layout .nav-contact { grid-column: 3; grid-row: 1; flex: 0 0 auto; min-height: 30px; padding: 2px 3px 2px 7px; gap: 3px; font-size: 10px; }
  .medical-layout .site-header .nav-contact > span:not(.nav-liquid-burst) { width: 20px; height: 20px; }
  .medical-layout .site-header .nav-contact .ui-icon { width: 11px; height: 11px; }
  .medical-layout.home-page .site-header.is-capsule .nav-inner { width: calc(100% - 8px); height: 64px; margin-top: 8px; padding: 0 7px; border-radius: 999px; }
}
@media (max-width: 360px) {
  .medical-layout .nav-inner { gap: 2px; }
  .medical-layout .site-nav a { padding: 0 2px; font-size: 11px; }
  .medical-layout .nav-contact { padding-left: 5px; font-size: 9px; }
  .medical-layout.home-page .site-header.is-capsule .nav-inner { padding: 0 5px; background: #fff; }
}
@media (prefers-reduced-motion: reduce) {
  .medical-layout .site-header, .medical-layout .nav-inner, .medical-layout .site-nav a, .medical-layout .nav-contact { transition: none; }
  .medical-layout .product-submenu, .medical-layout .product-submenu a, .medical-layout .product-submenu a svg { transition: none; }
  .medical-layout .site-header .nav-liquid-burst { animation: none; display: none; }
}