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编辑当前文件:/var/www/cognitio.in/wp-content/themes/twentytwentyone/assets/sass/06-components/navigation.scss

// Navigation

// Mobile menu toggles
.menu-button-container {
	display: none;
	justify-content: space-between;
	position: absolute;
	right: 0;
	padding-top: calc(0.5 * var(--global--spacing-vertical));
	padding-bottom: calc(0.25 * var(--global--spacing-vertical));

@include media(mobile-only) {
		display: flex;
	}

// Override specificity from default button styles.
	#primary-mobile-menu {
		display: flex;
		margin-left: auto;
		padding: calc(var(--button--padding-vertical) - (0.25 * var(--global--spacing-unit))) calc(0.5 * var(--button--padding-horizontal));
		font-size: var(--primary-nav--font-size-button);
		font-weight: var(--primary-nav--font-weight-button);
		background-color: transparent;
		border: none;
		color: var(--primary-nav--color-link);

.dropdown-icon {
			display: flex;
			align-items: center;

.svg-icon {
				margin-left: calc(0.25 * var(--global--spacing-unit));
			}

// Menu icon is off-center vertically to prevent blurry pixels.
			&.open .svg-icon {
				position: relative;
				top: -1px;
			}

&.close {
				display: none;
			}
		}

&[aria-expanded*="true"] {

.dropdown-icon {

&.open {
					display: none;
				}

&.close {
					display: flex;

.has-logo.has-title-and-tagline & {
						animation-name: twentytwentyone-close-button-transition;
						animation-duration: 0.3s;
					}
				}
			}
		}
	}

// When the menu is open, hide the close button and show the hide button.
	.primary-navigation-open & {
		width: 100%;
		z-index: 500;
		background-color: var(--global--color-background);

#primary-mobile-menu {
			position: static;
		}
	}
}

.primary-navigation {
	position: absolute;
	top: var(--global--admin-bar--height);
	right: 0;
	color: var(--primary-nav--color-text);
	font-size: var(--primary-nav--font-size);
	line-height: 1.15;
	margin-top: 0;
	margin-bottom: 0;

// Mobile menu closed
	> .primary-menu-container {
		position: fixed;
		visibility: hidden;
		opacity: 0;
		top: 0;
		right: 0;
		bottom: 0;
		left: 0;
		// Height of the menu-button-container using font size, line height, and total padding, plus 5px so the focus of the first item is visible.
		padding-top: calc(var(--button--line-height) * var(--primary-nav--font-size-button) + 42px + 5px);
		padding-left: var(--global--spacing-unit);
		padding-right: var(--global--spacing-unit);
		padding-bottom: var(--global--spacing-horizontal);
		background-color: var(--global--color-background);
		transform: translateY(var(--global--spacing-vertical));

@media (prefers-reduced-motion: no-preference) {
			transition: all .15s ease-in-out;
		}

@include media(mobile-only) {
			height: 100vh;
			z-index: 499;
			overflow-x: hidden;
			overflow-y: auto;
			border: 2px solid transparent;

.has-logo.has-title-and-tagline & {
				position: fixed;
				transform: translateY(0) translateX(100%);
			}

.admin-bar .has-logo.has-title-and-tagline & {
				top: var(--global--admin-bar--height);
			}

.admin-bar & {
				height: calc(100vh - var(--global--admin-bar--height));
			}

&:focus {
				border: 2px solid var(--global--color-primary);
			}
		}
	}

// Mobile menu open
	.primary-navigation-open & {

@include media(mobile-only) {
			width: 100%;
			position: fixed;
			z-index: 2; // To be greater than the cover block and embeds.
		}

> .primary-menu-container {
			position: absolute;
			visibility: visible;
			opacity: 1;
			transform: translateY(0);
		}
	}

.primary-navigation-open .has-logo.has-title-and-tagline & {
		@include media(mobile-only) {

> .primary-menu-container {
				transform: translateX(0) translateY(0);
			}
		}
	}

@include media(mobile) {
		position: relative;
		margin-left: auto;

// Hide Mobile menu on desktop
		> .primary-menu-container {
			visibility: visible;
			opacity: 1;
			position: relative;
			padding: 0;
			background-color: transparent;
			overflow: initial;
			transform: none;
		}

// Hide mobile menu toggle
		#toggle-menu {
			display: none;
		}

// Hide sub-sub-menus
		> .primary-menu-container ul > li .sub-menu-toggle[aria-expanded="false"] ~ ul {
			display: none;
		}

// Don't adjust position when logged-in
		.admin-bar & {
			top: initial;

> .primary-menu-container {
				top: initial;
			}
		}
	}

// Menu list wrapper
	> div > .menu-wrapper {
		display: flex;
		justify-content: flex-start;
		flex-wrap: wrap;
		list-style: none;
		margin: 0;
		max-width: none;
		padding-left: 0;
		position: relative;

@include media(mobile-only) {
			padding-bottom: 100px;

ul {
				padding-left: 0;
			}
		}

li {
			display: block;
			position: relative;
			width: 100%;

@include media(mobile) {
				margin: 0;
				width: inherit;

&:last-child {
					margin-right: 0;
				}
			}
		}

// Sub-menu buttons
		.sub-menu-toggle {
			display: flex;
			height: calc(2 * var(--primary-nav--padding) + 1.15em + 1px);
			width: 44px;
			padding: 0;
			justify-content: center;
			align-items: center;
			background: transparent;
			color: currentColor;
			border: none;

&:focus {
				outline: 2px solid var(--wp--style--color--link, var(--global--color-primary));
			}

@include media(mobile-only) {
				display: none;
			}

.icon-plus,
			.icon-minus {
				height: 100%;
				display: flex;
				align-items: center;

svg {
					margin-top: -1px;
				}
			}

.icon-minus {
				display: none;
			}

// When the sub-menu is open, display the minus icon
			&[aria-expanded="true"] {

.icon-minus {
					display: flex;
				}

.icon-plus {
					display: none;
				}
			}
		}

// Sub-menus Flyout
		> li > .sub-menu {

position: relative;

@include media(mobile) {
				@media (prefers-reduced-motion: no-preference) {
					transition: all 0.5s ease;
				}
			}

@include media(mobile) {
				left: 0;
				margin: 0;
				min-width: max-content;
				position: absolute;
				top: 100%;
				padding-top: 3px;
				z-index: 88888;

&:before,
				&:after {
					content: "";
					display: block;
					position: absolute;
					width: 0;
					top: -10px;
					left: var(--global--spacing-horizontal);
					border-style: solid;
					border-color: var(--primary-nav--border-color) transparent;
					border-width: 0 7px 10px 7px;
				}

&:after {
					top: -9px;
					border-color: var(--global--color-background) transparent;
				}

li {
					background: var(--global--color-background);
				}

&.submenu-reposition-left {

/* rtl:ignore */
					left: 0;

/* rtl:ignore */
					right: auto;

&:before,
					&:after {

/* rtl:ignore */
						left: var(--global--spacing-horizontal);

/* rtl:ignore */
						right: auto;
					}
				}

&.submenu-reposition-right {

/* rtl:ignore */
					right: 0;

/* rtl:ignore */
					left: auto;

&:before,
					&:after {

/* rtl:ignore */
						left: auto;

/* rtl:ignore */
						right: var(--global--spacing-horizontal);
					}
				}
			}
		}
	}

// Top-level Item Link Colors
	.primary-menu > .menu-item:hover > a {
		color: var(--primary-nav--color-link-hover);
	}

.primary-menu-container {
		@include media(mobile) {
			// Better align with the site title when the menu wraps.
			margin-right: calc(0px - var(--primary-nav--padding));
			margin-left: calc(0px - var(--primary-nav--padding));

// Top-level Menu Item
			> ul > .menu-item {
				display: flex;

> a {
					padding-left: var(--primary-nav--padding);
					padding-right: var(--primary-nav--padding);

+ .sub-menu-toggle {
						margin-left: calc(5px - var(--primary-nav--padding));
					}
				}
			}
		}
	}

// Menu Item Link
	a {
		display: block;
		font-family: var(--primary-nav--font-family-mobile);
		font-size: var(--primary-nav--font-size-mobile);
		font-weight: var(--primary-nav--font-weight);
		padding: var(--primary-nav--padding) 0;
		text-decoration: none;

@include media(mobile) {
			display: block;
			font-family: var(--primary-nav--font-family);
			font-size: var(--primary-nav--font-size);
			font-weight: var(--primary-nav--font-weight);
		}

+ svg {
			fill: var(--primary-nav--color-text);
		}

&:hover,
		&:link,
		&:visited {
			color: var(--primary-nav--color-link-hover);
		}

&:hover {
			text-decoration: underline;
			text-decoration-style: dotted;
		}

&:focus {
			position: relative;
			z-index: 99999; // Ensure focus styles appear above absolute positioned elements
			outline-offset: 0;
			text-decoration-thickness: 2px;
		}
	}

.current-menu-item > a:first-child,
	.current_page_item > a:first-child {
		text-decoration: underline;
		text-decoration-style: solid;

&:hover {
			text-decoration: underline;
			text-decoration-style: dotted;
		}
	}

// Sub-menu depth indicators + text styles
	.sub-menu {
		margin: 0;
		padding: 0;
		list-style: none;
		margin-left: var(--primary-nav--padding);
		border: 1px solid var(--primary-nav--border-color);

.sub-menu {
			border: none;
		}

// Sub-menu items om wide screens.
		@include media(mobile) {

// For nested sub-menus, don't duplicate the padding
			> .menu-item > .sub-menu {
				padding: 0;
			}
		}

.menu-item {

@include media(mobile-only) {

&:last-child {
					margin-bottom: 0;
				}

}

> a {
				padding: calc(1.25 * var(--primary-nav--padding)) var(--primary-nav--padding);
				display: block;
				font-size: var(--primary-nav--font-size-sub-menu-mobile);
				font-style: var(--primary-nav--font-style-sub-menu-mobile);

@include media(mobile) {
					font-size: var(--primary-nav--font-size-sub-menu);
					font-style: var(--primary-nav--font-style);
				}
			}
		}
	}

// Show top-level sub-menu indicators above mobile-breakpoint-only
	.menu-item-has-children {

> .svg-icon {
			display: none;
		}

@include media(mobile) {

> .svg-icon {
				display: inline-block;
				height: 100%;
			}

.sub-menu .svg-icon {
				display: none;
			}
		}

}

.menu-item-description {
		display: block;
		clear: both;
		font-size: var(--global--font-size-xs);
		text-transform: none;
		line-height: 1.7;

> span {
			display: inline-block;
		}
	}
}

// Keep the menu pinned to the top when the menu is open.
@include media(mobile-only) {

.lock-scrolling .site {
		position: fixed;
		max-width: 100%;
		width: 100%;
	}
}

// Close button animation for when a custom logo is present.
@keyframes twentytwentyone-close-button-transition {

from {
		opacity: 0;
	}

to {
		opacity: 1;
	}
}