/* 共用導覽獨立命名，避免影響療程內頁原有的按鈕。 */
/* 錨點預留實際導覽高度，跳到段落時不會被頂端 Header 遮住。 */
html { scroll-padding-top: calc(var(--site-header-height, 92px) + 20px); }
.nav.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: clamp(14px, 1.4vw, 28px);
  height: 132px;
  padding: 0 6vw;
  /* 白底搭配綠色、粉色 LOGO，放大尺寸沿用下方的響應式設定。 */
  background: #fff;
  color: #284f45;
  border-bottom: 1px solid #bcddae;
  line-height: 1.5;
}
.site-header .site-header-logo { flex: 0 0 auto; display: flex; align-items: center; }
.site-header .site-header-logo img { display: block; width: 154px; height: auto; }
.site-header .site-header-links {
  display: flex;
  flex: 1 1 auto;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: nowrap;
  gap: clamp(10px, 1.15vw, 26px);
  font-size: 15px;
  letter-spacing: .04em;
}
.site-header-links > a,
.site-header-links > span {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  white-space: nowrap;
  color: #284f45;
  text-decoration: none;
  padding: 8px 0;
}
.site-header-links > a { text-underline-offset: 6px; text-decoration-thickness: 1px; }
.site-header .header-book {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 20px;
  border: 1px solid #5daa96;
  border-radius: 999px;
  background: #bcddae;
  color: #284f45;
  font-size: 15px;
  letter-spacing: .08em;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.site-header .header-book:focus-visible,
.site-header .header-book:active {
  background: #284f45;
  border-color: #284f45;
  color: #fff;
}
.site-header a:focus-visible,
.site-header button:focus-visible {
  outline: 2px solid #284f45;
  outline-offset: 4px;
}
@media (hover: hover) {
  .site-header-links > a:hover { color: #397c69; text-decoration: underline; }
  .site-header .header-book:hover {
    background: #284f45;
    border-color: #284f45;
    color: #fff;
    box-shadow: 0 4px 12px rgba(40, 79, 69, .18);
  }
}
.site-header .header-menu-toggle { display: none; }
@media (min-width: 1101px) and (max-width: 1399px) {
  .nav.site-header { height: 122px; padding-inline: 4vw; gap: 16px; }
  .site-header .site-header-logo img { width: 140px; }
  .site-header .site-header-links { font-size: 14px; gap: 12px; letter-spacing: 0; }
  .site-header .header-book { padding-inline: 16px; font-size: 14px; }
}
/* 小螢幕採展開式選單；預約一直可見，所有療程都能直接點擊。 */
@media (max-width: 1100px) {
  .nav.site-header { height: auto; min-height: 88px; padding: 8px 4vw; flex-wrap: wrap; gap: 12px; }
  .site-header .site-header-logo { margin-right: auto; }
  .site-header .site-header-logo img { width: 140px; }
  .site-header .header-book { order: 1; min-height: 44px; padding: 9px 16px; font-size: 14px; }
  .site-header[data-nav-ready] .header-menu-toggle {
    display: inline-flex;
    order: 2;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid #bcddae;
    border-radius: 12px;
    background: #fff;
    color: #284f45;
    cursor: pointer;
  }
  .header-menu-toggle svg { width: 24px; height: 24px; }
  .site-header .site-header-links {
    order: 4;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    flex: 1 1 100%;
    gap: 4px 16px;
    padding-top: 12px;
    border-top: 1px solid #e5eddf;
    font-size: 15px;
    letter-spacing: .04em;
    /* 橫向手機也能捲動展開的選單，保留頂端操作按鈕。 */
    max-height: calc(100vh - 140px);
    max-height: calc(100dvh - 140px);
    overflow-y: auto;
  }
  .site-header[data-nav-ready]:not([data-menu-open]) .site-header-links { display: none; }
  .site-header-links > a, .site-header-links > span { padding: 10px 8px; min-height: 44px; }
  .site-header .header-menu-toggle[aria-expanded="true"] { background: #f3f8ef; color: #284f45; border-color: #5daa96; }
}
@media (max-width: 767px) {
  .nav.site-header { padding-inline: 20px; gap: 10px; }
  .site-header .site-header-links { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .site-header .header-book { transition: none; }
}

/* 窄手機保留預約與選單的操作空間，LOGO 仍大於原本的 96px。 */
@media (max-width: 359px) {
  .site-header .site-header-logo img { width: 128px; }
  .site-header .header-book { padding-inline: 12px; }
}