/**
 * 宅吉 · 统一导览（Shopify 风格顶栏 + 左侧抽屉）
 */
:root {
  --zj-nav-h: 56px;
  --zj-nav-bg: #fff;
  --zj-nav-border: #e8e8e8;
  --zj-nav-text: #0a0a0a;
  --zj-nav-muted: #6b6b6b;
  --zj-nav-accent: #2d5a3d;
  /* 与 Shopify Horizon header-drawer icon-menu 一致 */
  --zj-nav-menu-pad: 1rem;
  --zj-nav-menu-icon: 0.85rem;
  --zj-nav-menu-stroke: 1.5px;
}

.zj-nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--zj-nav-h);
  z-index: 10050;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 12px;
  background: var(--zj-nav-bg);
  border-bottom: 1px solid var(--zj-nav-border);
}

.zj-nav-header--brand {
  --zj-nav-h: 58px;
}

.zj-nav-header--transparent {
  background: transparent;
  border-bottom-color: transparent;
}

.zj-nav-header--transparent.zj-nav-header--scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom-color: var(--zj-nav-border);
  backdrop-filter: blur(12px);
}

.zj-nav-side {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
}

.zj-nav-side--left {
  justify-self: start;
}

.zj-nav-side--right {
  justify-self: end;
  justify-content: flex-end;
  gap: 0;
}

.zj-nav-toggle {
  margin: 0;
  padding: var(--zj-nav-menu-pad);
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--zj-nav-text);
  -webkit-tap-highlight-color: transparent;
  min-height: calc(2 * var(--zj-nav-menu-pad) + var(--zj-nav-menu-icon));
  min-width: calc(2 * var(--zj-nav-menu-pad) + var(--zj-nav-menu-icon));
}

.zj-nav-toggle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--zj-nav-menu-icon);
  height: var(--zj-nav-menu-icon);
  margin: auto;
}

.zj-nav-toggle-icon svg,
.zj-nav-menu-svg {
  display: block;
  width: var(--zj-nav-menu-icon);
  height: var(--zj-nav-menu-icon);
}

.zj-nav-toggle-icon path {
  stroke: currentColor;
  stroke-width: var(--zj-nav-menu-stroke);
  stroke-linecap: round;
}

.zj-nav-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--zj-nav-text);
  text-decoration: none;
  border: none;
  background: transparent;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.zj-nav-icon-btn:hover,
.zj-nav-icon-btn:focus-visible {
  opacity: 0.55;
  outline: none;
}

.zj-nav-logo {
  justify-self: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  padding: 4px 8px;
}

.zj-nav-logo-cn {
  font-family: 'Noto Serif SC', 'Songti SC', serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--zj-nav-text);
  line-height: 1;
}

.zj-nav-wordmark {
  display: block;
  height: 25px;
  width: auto;
  max-width: 125px;
}

.zj-nav-logo:not(:has(img)) {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--zj-nav-accent);
  white-space: nowrap;
}

.zj-nav-back {
  font-size: 14px;
  font-weight: 500;
  color: var(--zj-nav-text);
  text-decoration: none;
  padding: 8px 4px;
  max-width: 100px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.zj-nav-back:hover { opacity: 0.6; }

.zj-nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: min(88vw, 360px);
  height: 100%;
  z-index: 10060;
  background: var(--zj-nav-bg);
  transform: translateX(-105%);
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.08);
}

.zj-nav-drawer.open {
  transform: translateX(0);
}

.zj-nav-drawer-close {
  align-self: flex-start;
  margin: 12px 12px 8px;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  color: var(--zj-nav-text);
}

.zj-nav-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 28px 32px;
  -webkit-overflow-scrolling: touch;
}

.zj-nav-group {
  margin-bottom: 28px;
}

.zj-nav-group-title {
  margin: 0 0 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--zj-nav-muted);
}

.zj-nav-link {
  display: block;
  padding: 10px 0;
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.35;
  color: var(--zj-nav-text);
  text-decoration: none;
  letter-spacing: 0.02em;
  font-family: inherit;
}

.zj-nav-link:hover,
.zj-nav-link:focus-visible {
  opacity: 0.55;
  outline: none;
}

.zj-nav-link--emphasis {
  font-weight: 600;
}

.zj-nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10055;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.zj-nav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

body.zj-nav-open {
  overflow: hidden;
}

body.zj-has-global-nav {
  padding-top: var(--zj-nav-h);
}

body.zj-has-global-nav.in-iframe {
  padding-top: 0;
}

body.zj-has-global-nav.in-iframe .zj-nav-header,
body.zj-has-global-nav.in-iframe .zj-nav-drawer,
body.zj-has-global-nav.in-iframe .zj-nav-backdrop {
  display: none !important;
}

/* 语言切换：顶栏 EN / CN，无竖线分隔 */
.zj-nav-lang {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  margin-right: -2px;
}

.zj-nav-lang-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--zj-nav-text);
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: normal;
  padding: 8px 2px;
  min-width: 32px;
  min-height: 40px;
  cursor: pointer;
  line-height: 1;
  opacity: 1;
  transition: opacity 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.zj-nav-lang-btn:hover { opacity: 0.65; }

.zj-nav-header--transparent:not(.zj-nav-header--scrolled) .zj-nav-lang-btn {
  color: var(--zj-nav-text);
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.85);
}

.zj-nav-lang-code {
  min-width: 1.25em;
  text-align: center;
}

.zj-nav-lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 132px;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  padding: 4px;
  z-index: 1200;
}

.zj-nav-lang-option {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  padding: 8px 10px;
  font-size: 13px;
  border-radius: 6px;
  cursor: pointer;
  color: #1a1a1a;
}

.zj-nav-lang-option:hover { background: rgba(0, 0, 0, 0.04); }
.zj-nav-lang-option.is-active { font-weight: 600; color: #2d5a3d; }

body.zj-has-global-nav:not(.in-iframe) {
  --header-nav-h: var(--zj-nav-h);
}