.site-header {
    --header-brand-nav-gap: 32px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(14px);
}

[data-theme="dark"] .site-header {
    background: rgba(15, 23, 42, 0.92);
}

.site-header .container {
    padding-top: 0;
    padding-bottom: 0;
}

.header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 56px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--header-brand-nav-gap);
    min-width: 0;
    flex: 1 1 auto;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex: 0 0 auto;
    position: relative;
    color: var(--color-text);
    text-decoration: none;
}

.site-brand:hover {
    color: var(--color-text);
}

.site-brand-mark {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    height: 34px;
    min-width: 0;
}

.site-brand-image {
    display: block;
    width: auto;
    max-width: none;
    height: 100%;
    object-fit: contain;
}

.site-brand-image--dark {
    display: none;
}

[data-theme="dark"] .site-brand-image--light {
    display: none !important;
}

[data-theme="dark"] .site-brand-image--dark {
    display: block !important;
}

.site-brand-copy {
    display: flex;
    flex-direction: column;
    min-width: 0;
    max-width: min(28vw, 360px);
    line-height: 1.2;
}

.site-brand-copy.is-title-hidden {
    justify-content: center;
}

.site-brand-copy.is-subtitle-hidden {
    justify-content: center;
}

.site-brand-copy.is-title-hidden .site-brand-tagline {
    margin-top: 0;
    font-size: 12px;
    color: var(--color-text-secondary);
}

.site-brand-title {
    display: block;
    max-width: 100%;
    overflow: hidden;
    color: var(--color-text);
    font-size: 15px;
    font-weight: 700;
    line-height: 1.25;
    white-space: nowrap;
    letter-spacing: 0;
    text-overflow: ellipsis;
}

.site-brand-tagline {
    display: block;
    margin-top: var(--space-1);
    font-size: 11px;
    color: var(--color-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.site-brand-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.main-nav {
    min-width: 0;
    flex: 1 1 auto;
    overflow: visible;
}

.nav-list,
.nav-dropdown-list,
.nav-submenu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 24px;
    white-space: nowrap;
    flex-wrap: wrap;
}

/* Fallback styling for unstyled raw navbar links inside .nav-list */
.nav-list a {
    display: inline-flex;
    align-items: center;
    color: var(--color-text-secondary, #475569);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-fast, 0.2s);
}

.nav-list a:hover {
    color: var(--color-text, #0f172a);
}

/* Hide any accidental raw <br> tags inside .nav-list */
.nav-list br {
    display: none !important;
}

/* Make any raw <p> or <li> direct children behave horizontally */
.nav-list > p,
.nav-list > li {
    display: inline-flex;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-item,
.nav-sub-item {
    position: relative;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 68px;
    padding: 0;
    border-radius: 0;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    transition: color var(--transition-fast);
}

.nav-sub-link {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
    min-height: 34px;
    padding: 0 10px;
    border: 1px solid transparent;
    border-radius: 4px;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 13px;
    line-height: 1.25;
    transition: background-color var(--transition-fast),
        border-color var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-item:hover > .nav-link,
.nav-item:focus-within > .nav-link,
.nav-item.is-current > .nav-link {
    background: transparent;
    color: var(--color-text);
}

.nav-sub-link:hover,
.nav-sub-link:focus-visible,
.nav-sub-item:hover > .nav-sub-link,
.nav-sub-item:focus-within > .nav-sub-link,
.nav-sub-item.is-current > .nav-sub-link {
    border-color: transparent;
    background: var(--color-bg-soft);
    color: var(--color-text);
}

.nav-link-label {
    min-width: 0;
}

.nav-link-caret,
.nav-submenu-caret {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 12px;
    height: 12px;
    font-size: 12px;
    line-height: 1;
    color: var(--color-text-muted);
    transition: transform var(--transition-fast),
        color var(--transition-fast);
}

.nav-expand-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    min-width: 40px;
    height: 40px;
    min-height: 40px;
    padding: 0;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--color-text-muted);
}

.nav-expand-toggle:hover,
.nav-expand-toggle:focus-visible {
    background: transparent;
    color: var(--color-text);
    box-shadow: none;
}

.nav-expand-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 12px;
    height: 12px;
    font-size: 12px;
    line-height: 1;
    transition: transform var(--transition-fast),
        color var(--transition-fast);
}

.nav-link-caret {
    transform: rotate(0deg);
}

.nav-submenu-caret {
    transform: rotate(-90deg);
}

.has-dropdown:hover > .nav-link .nav-link-caret,
.has-dropdown:focus-within > .nav-link .nav-link-caret {
    transform: rotate(180deg);
    color: var(--color-text-secondary);
}

.has-submenu:hover > .nav-sub-link .nav-submenu-caret,
.has-submenu:focus-within > .nav-sub-link .nav-submenu-caret {
    transform: rotate(-90deg);
    color: var(--color-text-secondary);
}

.has-dropdown:hover > .nav-dropdown,
.has-dropdown:focus-within > .nav-dropdown,
.has-submenu:hover > .nav-submenu,
.has-submenu:focus-within > .nav-submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate3d(0, 0, 0);
}

.nav-dropdown,
.nav-submenu,
.header-user-dropdown {
    position: absolute;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast),
        visibility var(--transition-fast);
}

.nav-dropdown,
.header-user-dropdown {
    top: calc(100% + 2px);
    padding: 5px;
    transform: translate3d(0, 6px, 0);
}

.nav-dropdown {
    left: 0;
    min-width: 144px;
    top: calc(100% - 12px);
    z-index: 20;
}

.nav-submenu {
    top: -5px;
    left: calc(100% + 8px);
    min-width: 120px;
    padding: 4px;
    z-index: 21;
    transform: translate3d(6px, 0, 0);
}

.nav-submenu .nav-submenu {
    top: -4px;
    left: calc(100% + 6px);
    min-width: 104px;
    padding: 4px;
}

.nav-dropdown::before,
.nav-submenu::before,
.header-user-dropdown::before {
    content: "";
    position: absolute;
}

.nav-dropdown::before,
.header-user-dropdown::before {
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
}

.nav-submenu::before {
    top: 0;
    bottom: 0;
    left: -8px;
    width: 8px;
}

.nav-dropdown-list,
.nav-submenu-list {
    display: grid;
    gap: 1px;
}

.header-tools {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
}

.header-tool,
.header-user-toggle,
.header-login-button,
.header-search-close {
    box-shadow: none;
}

.header-tool {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    min-width: 36px;
    height: 36px;
    min-height: 36px;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 999px;
    background: transparent;
    color: var(--color-text-secondary);
}

.header-tool:hover,
.header-tool:focus-visible {
    border-color: transparent;
    background: transparent;
    color: var(--color-text);
    box-shadow: none;
}

.header-tool-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    line-height: 1;
}

.header-menu-toggle {
    display: none;
    position: relative;
}

.header-menu-icon {
    font-size: 22px;
}

.header-menu-icon-close {
    display: none;
}

.header-menu-toggle[aria-expanded="true"] .header-menu-icon-open {
    display: none;
}

.header-menu-toggle[aria-expanded="true"] .header-menu-icon-close {
    display: inline-flex;
}

.header-theme-toggle {
    position: relative;
}

.header-theme-toggle:hover,
.header-theme-toggle:focus-visible {
    border-color: transparent;
    background: transparent;
    color: var(--color-text-secondary);
}

.header-theme-icon-stack {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
}

.header-theme-toggle .header-tool-icon {
    position: absolute;
    inset: 0;
    margin: auto;
    transition: opacity 0.3s ease, transform 0.38s ease, color 0.3s ease;
}

.header-tool-icon-light {
    font-size: 24px;
    color: #f59e0b;
    opacity: 1;
    transform: translateY(0) rotate(0deg);
}

.header-tool-icon-dark {
    color: #64748b;
    opacity: 0;
    transform: translateY(-14px) rotate(-20deg);
}

[data-theme="dark"] .header-tool-icon-light {
    opacity: 0;
    transform: translateY(14px) rotate(18deg);
}

[data-theme="dark"] .header-tool-icon-dark {
    opacity: 1;
    transform: translateY(0) rotate(0deg);
}

.header-user {
    position: relative;
    flex: 0 0 auto;
}

.header-user:hover > .header-user-dropdown,
.header-user:focus-within > .header-user-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate3d(0, 0, 0);
}

.header-user-toggle,
.header-login-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 36px;
    padding: 0 12px;
    border: 1px solid transparent;
    border-radius: 4px;
    background: transparent;
    color: var(--color-text);
    font-size: 14px;
    line-height: 1;
    text-decoration: none;
}

.header-user-toggle:hover,
.header-user-toggle:focus-visible,
.header-login-button:hover,
.header-login-button:focus-visible {
    border-color: transparent;
    background: transparent;
    color: var(--color-text);
    box-shadow: none;
}

.header-user-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex: 0 0 20px;
    line-height: 1;
}

.header-user-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}

.header-user-avatar-icon {
    display: block;
    width: 100%;
    height: 100%;
}

.header-user-avatar-icon.iconfont {
    width: auto;
    height: auto;
    font-size: 16px;
    line-height: 1;
}

.header-user-name {
    max-width: 120px;
    overflow: hidden;
    color: var(--color-text);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.header-user-caret {
    font-size: 12px;
    line-height: 1;
    color: var(--color-text-muted);
    transition: transform var(--transition-fast),
        color var(--transition-fast);
}

.header-user:hover .header-user-caret,
.header-user:focus-within .header-user-caret {
    transform: rotate(180deg);
    color: var(--color-text-secondary);
}

.header-user-dropdown {
    right: 0;
    min-width: 112px;
    padding: 5px;
    z-index: 22;
}

.header-user-link {
    display: flex;
    align-items: center;
    min-height: 34px;
    padding: 0 9px;
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--color-text-secondary);
    font-size: 13px;
    line-height: 1.25;
    text-decoration: none;
    transition: background-color var(--transition-fast),
        border-color var(--transition-fast), color var(--transition-fast);
}

.header-user-link:hover,
.header-user-link:focus-visible {
    border-color: var(--color-border);
    background: var(--color-bg-soft);
    color: var(--color-text);
}

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

.header-menu-overlay[hidden] {
    display: none;
}

.header-menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 190;
    display: flex;
    align-items: stretch;
    justify-content: flex-start;
}

.header-menu-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.42);
    backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.28s ease;
}

.header-menu-panel {
    position: relative;
    z-index: 1;
    width: min(80vw, 320px);  /* 抽屉宽度：最多 80vw，最大 320px */
    height: 100vh;
    max-height: none;
    overflow: auto;
    padding: 16px;
    border: 0;
    border-radius: 0;
    background: rgba(248, 250, 252, 0.98);
    box-shadow: 18px 0 44px rgba(15, 23, 42, 0.18);
    transform: translate3d(-100%, 0, 0);
    transition: transform 0.28s ease;
}

.header-menu-overlay.is-visible .header-menu-backdrop {
    opacity: 1;
}

.header-menu-overlay.is-visible .header-menu-panel {
    transform: translate3d(0, 0, 0);
}

.header-menu-panel-head {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 12px;
}

.header-menu-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    min-width: 36px;
    height: 36px;
    min-height: 36px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--color-text-secondary);
}

.header-menu-close:hover,
.header-menu-close:focus-visible {
    background: transparent;
    color: var(--color-text);
    box-shadow: none;
}

.header-menu-close-icon {
    font-size: 22px;
    line-height: 1;
}

.header-menu-card {
    border: 1px solid rgba(226, 232, 240, 0.96);
    border-radius: 8px;
    background: var(--color-surface);
    overflow: hidden;
}

.header-menu-account-card {
    margin-bottom: 14px;
}

.header-menu-account-link {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 78px;
    padding: 14px;
    color: var(--color-text);
    text-decoration: none;
}

.header-menu-account-link:hover,
.header-menu-account-link:focus-visible {
    color: var(--color-text);
}

.header-menu-account-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    border-radius: 8px;
    background: var(--color-bg-soft);
    color: #3b82f6;
}

.header-menu-account-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
    display: block;
}

.header-menu-account-avatar-icon {
    display: block;
    width: 24px;
    height: 24px;
}

.header-menu-account-avatar-icon.iconfont {
    width: auto;
    height: auto;
    font-size: 24px;
    line-height: 1;
}

.header-menu-account-copy {
    display: flex;
    flex: 1 1 auto;
    min-width: 0;
    flex-direction: column;
}

.header-menu-account-name {
    color: var(--color-text);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.2;
}

.header-menu-account-meta {
    margin-top: 4px;
    color: var(--color-text-muted);
    font-size: 13px;
    line-height: 1.3;
}

.header-menu-account-arrow {
    flex: 0 0 auto;
    color: var(--color-text-muted);
    font-size: 14px;
    transform: rotate(-90deg);
}

.header-menu-section-title {
    margin: 0 0 8px;
    padding: 0 6px;
    color: var(--color-text-muted);
    font-size: 13px;
    line-height: 1.4;
}

.header-menu-nav {
    margin-bottom: 14px;
}

.header-menu-nav .nav-list,
.header-menu-nav .nav-dropdown-list,
.header-menu-nav .nav-submenu-list {
    display: grid;
    gap: 0;
}

.header-menu-nav .nav-list {
    width: 100%;
    min-width: 0;
}

.header-menu-nav > .nav-list > .nav-item + .nav-item {
    border-top: 1px solid rgba(226, 232, 240, 0.96);
}

.header-menu-nav .nav-item.has-dropdown,
.header-menu-nav .nav-sub-item.has-submenu {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 52px;
    align-items: stretch;
}

.header-menu-nav .nav-link,
.header-menu-nav .nav-sub-link {
    display: flex;
    width: 100%;
    min-height: 52px;
    padding: 0 14px;
    border: 0;
    border-radius: 0;
    justify-content: space-between;
    background: transparent;
    color: var(--color-text);
    font-size: 16px;
    line-height: 1.35;
}

.header-menu-nav .nav-sub-link {
    min-height: 44px;
    font-size: 15px;
    color: var(--color-text-secondary);
}

.header-menu-nav .nav-item.has-dropdown > .nav-link,
.header-menu-nav .nav-sub-item.has-submenu > .nav-sub-link {
    min-width: 0;
    padding-right: 0;
    justify-content: flex-start;
}

.header-menu-nav .nav-link:hover,
.header-menu-nav .nav-link:focus-visible,
.header-menu-nav .nav-item:hover > .nav-link,
.header-menu-nav .nav-item:focus-within > .nav-link,
.header-menu-nav .nav-item.is-current > .nav-link,
.header-menu-nav .nav-sub-link:hover,
.header-menu-nav .nav-sub-link:focus-visible,
.header-menu-nav .nav-sub-item:hover > .nav-sub-link,
.header-menu-nav .nav-sub-item:focus-within > .nav-sub-link,
.header-menu-nav .nav-sub-item.is-current > .nav-sub-link {
    background: transparent;
    color: var(--color-text);
}

.header-menu-nav .nav-link-caret,
.header-menu-nav .nav-submenu-caret {
    display: none;
}

.header-menu-nav .nav-dropdown,
.header-menu-nav .nav-submenu {
    position: static;
    min-width: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    pointer-events: auto;
    transform: none;
    display: grid;
    grid-column: 1 / -1;
    grid-template-rows: 0fr;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: grid-template-rows 0.24s ease, opacity 0.24s ease,
        visibility 0.24s ease;
}

.header-menu-nav .nav-dropdown::before,
.header-menu-nav .nav-submenu::before {
    display: none;
}

.header-menu-nav .nav-accordion-panel-inner {
    min-height: 0;
    overflow: hidden;
}

.header-menu-nav .nav-item.is-open > .nav-dropdown,
.header-menu-nav .nav-sub-item.is-open > .nav-submenu {
    grid-template-rows: 1fr;
    opacity: 1;
    visibility: visible;
}

.header-menu-nav > .nav-list > .nav-item > .nav-dropdown > .nav-accordion-panel-inner {
    border-top: 1px solid rgba(226, 232, 240, 0.96);
}

.header-menu-nav .nav-submenu > .nav-accordion-panel-inner {
    padding-bottom: 4px;
    padding-left: 18px;
}

.header-menu-nav .nav-expand-toggle {
    display: inline-flex;
    width: 52px;
    min-width: 52px;
    height: auto;
    min-height: 52px;
    color: var(--color-text-muted);
}

.header-menu-nav .nav-sub-item .nav-expand-toggle {
    min-height: 44px;
}

.header-menu-nav .nav-expand-toggle-icon {
    transform: rotate(-90deg);
}

.header-menu-nav .nav-expand-toggle[aria-expanded="true"] .nav-expand-toggle-icon {
    transform: rotate(0deg);
}

.header-menu-settings {
    display: grid;
}

.header-menu-setting {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;
    padding: 0 14px;
    border-top: 1px solid rgba(226, 232, 240, 0.96);
    background: transparent;
    color: var(--color-text);
    text-decoration: none;
}

.header-menu-settings > :first-child {
    border-top: 0;
}

.header-menu-setting:hover,
.header-menu-setting:focus-visible {
    background: transparent;
    color: var(--color-text);
    box-shadow: none;
}

.header-menu-setting-main {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.header-menu-setting-icon {
    font-size: 18px;
    line-height: 1;
    color: #64748b;
}

.header-menu-setting-label {
    font-size: 16px;
    line-height: 1.35;
}

.header-menu-switch {
    position: relative;
    width: 42px;
    height: 24px;
    flex: 0 0 42px;
    border-radius: 999px;
    background: #e2e8f0;
    transition: background-color var(--transition-fast);
}

.header-menu-switch-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    border-radius: 999px;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.16);
    transition: transform var(--transition-fast);
}

.header-menu-theme-toggle[aria-pressed="true"] .header-menu-switch {
    background: #2563eb;
}

.header-menu-theme-toggle[aria-pressed="true"] .header-menu-switch-thumb {
    transform: translateX(18px);
}

.header-menu-setting-danger,
.header-menu-setting-danger:hover,
.header-menu-setting-danger:focus-visible {
    color: #ef4444;
}

.header-menu-setting-danger .header-menu-setting-icon {
    color: currentColor;
}

.header-search-overlay[hidden] {
    display: none;
}

.header-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: clamp(60px, 10vh, 120px) 16px 24px;
}

.header-search-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.44);
    backdrop-filter: blur(8px);
}

.header-search-panel {
    position: relative;
    z-index: 1;
    width: min(100%, 600px);
}

.header-search-form,
.header-search-close {
    box-shadow: none;
}

.header-search-form {
    position: relative;
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr) 40px;
    align-items: center;
    min-height: 50px;
    padding: 0 8px;
    border: 1px solid rgba(226, 232, 240, 0.92);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 18px 44px rgba(15, 23, 42, 0.18);
    transition: border-color var(--transition-fast),
        box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.header-search-form:focus-within {
    border-color: #cbd5e1;
    box-shadow: 0 20px 48px rgba(15, 23, 42, 0.2);
}

.header-search-submit,
.header-search-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    min-width: 40px;
    height: 40px;
    min-height: 40px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: #94a3b8;
}

.header-search-submit:hover,
.header-search-submit:focus-visible,
.header-search-close:hover,
.header-search-close:focus-visible {
    background: transparent;
    color: #64748b;
    box-shadow: none;
}

.header-search-submit-icon {
    font-size: 18px;
    line-height: 1;
}

.header-search-input {
    min-height: 48px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    color: var(--color-text);
    font-size: 16px;
}

.header-search-input::placeholder {
    color: var(--color-text-secondary);
}

.header-search-input:focus {
    border: 0;
    box-shadow: none;
    outline: 0;
}

.header-search-close::before {
    content: "\00d7";
    font-size: 28px;
    font-weight: 300;
    line-height: 1;
}

[data-theme="dark"] .header-search-backdrop {
    background: rgba(2, 6, 23, 0.56);
}

[data-theme="dark"] .header-search-form {
    border-color: rgba(71, 85, 105, 0.88);
    background: rgba(15, 23, 42, 0.96);
    box-shadow: 0 18px 44px rgba(2, 6, 23, 0.42);
}

[data-theme="dark"] .header-search-form:focus-within {
    border-color: rgba(100, 116, 139, 0.96);
    box-shadow: 0 20px 48px rgba(2, 6, 23, 0.48);
}

[data-theme="dark"] .header-search-submit,
[data-theme="dark"] .header-search-close {
    color: #94a3b8;
}

[data-theme="dark"] .header-search-submit:hover,
[data-theme="dark"] .header-search-submit:focus-visible,
[data-theme="dark"] .header-search-close:hover,
[data-theme="dark"] .header-search-close:focus-visible {
    color: #cbd5e1;
}

[data-theme="dark"] .header-menu-backdrop {
    background: rgba(2, 6, 23, 0.56);
}

[data-theme="dark"] .header-menu-panel {
    background: rgba(15, 23, 42, 0.98);
    box-shadow: 18px 0 44px rgba(2, 6, 23, 0.42);
}

[data-theme="dark"] .header-menu-card {
    border-color: rgba(71, 85, 105, 0.88);
    background: rgba(15, 23, 42, 0.96);
}

[data-theme="dark"] .header-menu-nav > .nav-list > .nav-item + .nav-item,
[data-theme="dark"] .header-menu-nav > .nav-list > .nav-item > .nav-dropdown > .nav-accordion-panel-inner,
[data-theme="dark"] .header-menu-setting {
    border-color: rgba(71, 85, 105, 0.72);
}

[data-theme="dark"] .header-menu-account-avatar {
    background: rgba(30, 41, 59, 0.96);
}

[data-theme="dark"] .header-menu-close,
[data-theme="dark"] .header-menu-account-arrow,
[data-theme="dark"] .header-menu-nav .nav-expand-toggle {
    color: #94a3b8;
}

[data-theme="dark"] .header-menu-setting-icon {
    color: #94a3b8;
}

[data-theme="dark"] .header-menu-switch {
    background: #334155;
}

@media (max-width: 980px) {
    .header-bar {
        gap: 12px;
    }

    .header-left {
        --header-brand-nav-gap: 0;
    }

    .main-nav {
        display: none;
    }

    .header-menu-toggle {
        display: inline-flex;
    }

    .header-tools {
        gap: 6px;
        margin-left: auto;
    }

    .header-user-toggle,
    .header-login-button {
        padding: 0 8px;
    }

    .header-user-name {
        max-width: 72px;
    }
}

@media (max-width: 640px) {
    .header-tools {
        gap: 4px;
    }

    .site-brand-tagline {
        display: none;
    }

    .site-brand-mark {
        height: 32px;
    }

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

    .header-user-name {
        display: none;
    }

    .header-user-toggle {
        padding: 0 6px;
    }

    .header-user-caret {
        display: none;
    }

    .header-menu-overlay {
        padding: 0;
    }

    .header-menu-panel {
        width: min(85vw, 300px); /* 移动端保持侧抽屉样式 */
        padding: 12px;
    }

    .header-menu-account-link {
        min-height: 72px;
        padding: 12px;
    }

    .header-menu-account-name {
        font-size: 17px;
    }

    .header-menu-nav .nav-link {
        min-height: 48px;
        font-size: 15px;
    }

    .header-menu-nav .nav-sub-link {
        min-height: 40px;
        font-size: 14px;
    }

    .header-menu-setting {
        min-height: 52px;
        padding: 0 12px;
    }

    .header-menu-setting-label {
        font-size: 15px;
    }

    .header-search-panel {
        width: 100%;
    }

    .header-search-form {
        grid-template-columns: 36px minmax(0, 1fr) 36px;
        min-height: 48px;
        padding: 0 6px;
    }
}