:root {
	--width-site: 1160px;
	--width-article: 960px;
	--width-main: 72.5%;
	--width-side: calc(100% - var(--width-main));

	--space-1: 0.25rem;
	--space-2: 0.50rem;
	--space-3: 1.00rem;
	--space-4: 1.50rem;
	--space-5: 2.00rem;
}

@media (max-width: 1199px) {
	:root {
		--width-site: 960px;
	}
}
@media (max-width: 999px) {
	:root {
		--width-site: 760px;
	}
}
@media (max-width: 799px) {
	:root {
		--width-site: 560px;
	}
}


:root {
	--ff-logo: "Noto Serif", "Times New Roman";
	--ff-main: "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", "Meiryo", "游ゴシック", "Yu Gothic", "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
	--ff-code: "DejaVu Sans Mono", "Noto Sans Mono", "Consolas", "Courier";

	--fs-site-title-main: 5.2rem;
	--fs-site-title-sub: 3.2rem;
	--sps-site-title: 0.75; /* smartphone sclae */
	--fs-site-menu: 1.1rem;
	--fs-icon-main: 1.4rem;

	--fs-section-title: 1.8rem;
	--fs-post-title-single: 1.9rem;
	--fs-post-title-card: 1.4rem;

	--fs-main: 0.9rem;
	--fs-sub: 0.8rem;

	--fc-main-a: #444444;
	--fc-main-b: #666666;
	--fc-sub-a: #336699;
	--fc-sub-b: #993366;

	--bgc-main: #ffffff;
	--bgc-sub: #eeeeee;
	--bgc-button: #dddddd;
	--bgc-button-hover:#eeeeee;
	--bgc-button-disable: #cccccc;

	--border-color: #e0e0e0;
	--border-main: 1px solid var(--border-color);
	--btn-size-page: 3rem;

	--as-post-image-card: 16/9;
	--as-post-image-list: 4/1;

	--post-img-height-limit: 640px;
	--widget-width-limit: 160px;

}

@media (prefers-color-scheme: dark) {
	:root {
		--fc-main-a: #ffffff;
		--fc-main-b: #eeeeee;
		--fc-sub-a: #99ccff;
		--fc-sub-b: #ff99cc;

		--bgc-main: #222222;
		--bgc-sub: #444444;
		--bgc-button: #dddddd;
		--bgc-button-hover:#eeeeee;
		--bgc-button-disable: #cccccc;

		--border-color: #666666;
	}
}

/* reset css */
*, ::before, ::after {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	overflow: auto;
	text-decoration: none;
}

img {
	max-width: 100%;
	height: auto;
}

a {
	color: var(--fc-sub-a);
}
a:hover {
	color: var(--fc-sub-b);
}

/* Delete brank img-bottom  */
a img {
	vertical-align: middle;
}

/* Delete brank at <li><br><a>... for firefox */
li::marker {
	white-space: normal;
}

html {
	font-family: var(--ff-main);
	font-size: 16px;
	color: var(--fc-main-a);
	background-color: var(--bgc-main);
}

body {
	margin: 0;
	min-width: 300px;
	min-height: 100vh;

	display: flex;
	flex-direction: column;
	align-items: center;

	font-size: var(--fs-main);
	line-height: 1.6;
}

/* base layout */
.site-header, .site-footer, .site-content, .header-content, .footer-content {
	width: 100%;
}
.site-content , .header-content, .footer-content {
	max-width: var(--width-site); 
}
.main-content {
	flex: 1 0 var(--width-main);
}
.side-content {
	flex: 0 0 var(--width-side);	
}
@media (max-width: 999px) {	.main-content, .side-content { flex: 0 0 100%; } }

.site-content {
	display: flex;
	flex-flow: row wrap;
	justify-content: center;
	padding: var(--space-4) 0;
	border-top: var(--border-main);
	border-bottom: var(--border-main);
}
.main-content {
	display: flex;
	flex-flow: row wrap;
	align-content: flex-start;

	padding: var(--space-3) var(--space-4);
	border-left: var(--border-main);
	border-right: var(--border-main);
}
.side-content {
	padding: var(--space-3) var(--space-4);
}
@media (max-width: 999px) {	.side-content { 
	border-left: var(--border-main);
	border-right: var(--border-main);
} }

/* header */
.site-header {
}
.header-content {
	margin: 0 auto;
	padding: var(--space-3);
}

.header-content a {
	color: var(--fc-main-a);
	fill: var(--fc-main-a);
	text-decoration: none;
}
.header-content a:hover {
	color: var(--fc-main-b);
	fill: var(--fc-main-b);
}

.site-title>a {
	display: inline-flex;
	align-items: baseline;
	justify-content: center;
	overflow: hidden;
}

.site-title>a * {
	flex: 0 0 auto;
}

.site-logo {
	margin-right: var(--space-2);
}
.site-logo svg, .site-logo img {
	width: inherit;
	height: var(--fs-site-title-main);
	vertical-align: sub;
}

.site-title {
	font-family: var(--ff-logo);
	font-size: var(--fs-site-title-main);
	font-weight: bold;
	line-height: 1.5;
	text-align: center;
	overflow: hidden;
}

.site-title .site-title-second {
	font-size: var(--fs-site-title-sub);
}

@media (max-width: 799px) {
	.site-title {
		font-size: calc(var(--fs-site-title-main) * var(--sps-site-title));
	}
	.site-logo svg {
		height: calc(var(--fs-site-title-main) * var(--sps-site-title));
	}
	.site-title .site-title-second {
		font-size: calc(var(--fs-site-title-sub) * var(--sps-site-title));
	}
}

.site-menu {
	display: flex;
	flex-flow: row wrap;
	justify-content: center;

	padding: 0 var(--space-3);

	font-family: var(--ff-logo);
	font-size: var(--fs-site-menu);
	font-weight: bold;
}
.site-menu .menu-item {
	margin: 0 var(--space-2);
	padding: 0 var(--space-1);
}

.site-menu .menu-item .sub-menu {
	position: absolute;
	display: flex;
	flex-direction: column;
	align-items: flex-start;

	padding: var(--space-2) var(--space-3);
	background-color: var(--bgc-main);
	border: var(--border-main);

	visibility: hidden;
	opacity: 0;
	transition: opacity 0.25s, visibility 0.25s;
}
.site-menu .menu-item:hover .sub-menu {
	visibility: visible;
	opacity: 1;
}

/* footer */
.site-footer {
	margin-top: auto;
	font-size: var(--fs-sub);
}
.footer-content {
	margin: 0 auto;
	padding: var(--space-2);
}

.footer-row {
	display: flex;
	justify-content: center; 

	margin-top: var(--space-2);
	margin-bottom: var(--space-2);
}

.footer-item {
}


/* term list */
.term-list {
	width: 100%;
	margin-bottom: var(--space-4);
}
.term-title {
	margin-bottom: var(--space-3);
	font-size: var(--fs-post-title-card);
	text-align: center;
}
.term-title a {
	color: var(--fc-main-a);	
}
.term-title a:hover {
	color: var(--fc-main-b);
}
.term-posts {
	display: flex;
	flex-flow: row wrap;
}
.term-post {
	width: 50%;
	padding: var(--space-2);	
}
@media (max-width: 799px) {	
	.term-post { width: 100% } 
}
.term-post .post-image {
	display: flex;
	align-items: center;
	overflow: hidden;
	aspect-ratio: var(--as-post-image-list);
}

/* post */
.post-title {
	text-align: center;	
}
.post-title a {
	color: var(--fc-main-a);
}
.post-title a:hover {
	color: var(--fc-main-b);
}
.post-meta {
	display: flex;
	flex-flow: row wrap;
	justify-content: center;

	padding: 0 var(--space-2);
	color: var(--fc-main-b);
	font-size: var(--fs-sub);
}
.post-meta>* {
	flex: 0 0 auto;
	margin: 0 var(--space-1);
}


/* section-title */
.posts-title {
	width: 100%;
	padding: var(--space-3);
	font-size: var(--fs-section-title);
	font-weight: bold;
	text-align: center;
}

/* post-card */
.post.card {
	width: 50%;
	padding: var(--space-3);
}
@media (max-width: 799px) {	.post.card { width: 100% } }

.post.card .post-title {
	margin: var(--space-3) 0;
	font-size: var(--fs-post-title-card);
}

.post.card .post-image {
	display: flex;
	align-items: center;
	overflow: hidden;
	aspect-ratio: var(--as-post-image-card);
}


/* post-single */
.post.single {
	width: 100%;
	max-width: var(--width-article);
	margin: 0 auto var(--space-4);
	padding: 0 var(--space-4);
}

.post.single .post-header {
	padding: var(--space-4) 0;
	border-bottom: var(--border-main);
}

.post.single .post-title {
	margin-bottom: var(--space-4);
	font-size: var(--fs-post-title-single);
}

.post.single .readmore {
	font-size: var(--fs-sub);
}

/* post-contnet */
.post-content {
	padding: var(--space-3) 0;
}
.post-content > * {
	max-width: 100%;
	margin: var(--space-3) 0;
}
.post-content > h2 {
	margin-top: var(--space-4);
	border-bottom: var(--border-main);
}
.post-content p {
	overflow: auto;
}
.post-content p img {
	display: block;
	margin: var(--space-2) 0;
	width: auto;
	max-height: var(--post-img-height-limit);
}
.post-content canvas {
	display: block;
	margin: var(--space-3) auto;
}

.post-content ul, 
.post-content ol {
	list-style-position: inside;
	margin-left: var(--space-3);
}
.post-content li {
	margin: var(--space-2) 0;
}

.post-content hr {
	height: 1px;
	border: none;
	background-color: var(--border-color);
}

.post-content del {
	text-decoration: line-through;
}

.post-content aside {
	padding: var(--space-3) var(--space-4);
	margin: var(--space-4) 0;
	border: var(--border-main);
}

pre {
	padding: var(--space-3) var(--space-3);
	font-family: var(--fonts-mono);
	line-height: inherit;
	word-wrap: break-word;
	background-color: var(--bgc-sub);
}
p code {
	margin: var(--space-1);
	padding: var(--space-1);
	background-color: var(--bgc-sub);
}

.post-content table {
	margin: 40px 0;
	border-collapse: collapse;
}
.post-content table thead {
	background-color: var(--bgc-sub);
}
.post-content table th,
.post-content table td {
	padding: var(--space-2) var(--space-3);
	text-align: left;
	border: var(--border-main);
}

.post-footer {
	border-bottom: var(--border-main);
}
.post-navigation {
	padding: var(--space-3) 0;
	text-align: center;
}
.post-navigation .next-post, .post-navigation .prev-post {
	margin: var(--space-1) 0;
}

/* pagination */
.pagination {
	flex: 0 0 100%;
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	margin: var(--space-4) 0;
}

.page-item {
	margin: var(--space-2);

	border: var(--border-main);
	border-radius: 100px;
	background-color: var(--bgc-sub);
}

.page-item.current {
	background-color: inherit;
}

.page-item span, .page-item a {
	display: block;
	width: var(--btn-size-page);
	line-height: var(--btn-size-page);
	text-align: center;

	color: var(--fc-main-a);

}
.page-item a:hover {
	color: var(--fc-sub-a);
}

/* side content */
.side-content {
	font-size: var(--fs-sub);
	display: flex;
	flex-wrap: wrap;
	align-content: flex-start;
}
.side-content a {
	color: var(--fc-main-a);
}
.side-content a:hover {
	color: var(--fc-sub-a);
}

.widget {
	flex: 0 0 100%;
	padding: var(--space-2) var(--space-3);
}
@media (max-width: 999px) {
	.widget { flex-basis: 50% }
}
@media (max-width: 799px) {	
	.widget { flex-basis: 100% }
}

.widget-header {

}
.widget-content > * {
	margin: var(--space-3) 0;
	padding: 0 var(--space-1);
}
.widget-content li {
	line-height: 2;
}
.widget-content p {
	margin: var(--space-2) 0;
}

/* profile */
.profile .profile-icon img {	
	width: 100%;
	max-width: var(--widget-width-limit);
	padding: var(--space-1);
	box-sizing: content-box;
	vertical-align: middle;
}
.social-links {
	display: flex;
	flex-flow: row wrap;
	max-width: calc(var(--widget-width-limit) + var(--space-1) * 2);
	box-sizing: content-box;
}
.social-links .social-icon {
	flex: 0 0 25%;
	padding: var(--space-1);
	font-size: var(--fs-icon-main);
	text-align: center;	
}
.social-links .social-banner {
	flex: 0 1 auto;
	padding: var(--space-2) var(--space-1);
}

/* widget-post */
.widget .post-image {
	padding: var(--space-1);
}
.widget .post-title {
	text-align: left;
	padding: var(--space-1);
}

/* amazon-ad */
.amazon-ad {
	display: flex;
	flex-wrap: wrap;
}
.amazon-ad .product-image {
	flex: 1 0 auto;
}
.amazon-ad .product-title {
	flex: 1 1 auto;
}
.amazon-ad .product-title a {
	color: var(--fc-sub-a);
}
.amazon-ad .product-title a:hover {
	color: var(--fc-sub-b);
}

.post .amazon-ad .product-image {
	flex-basis: 25%;
	padding: var(--space-2);
}
.post .amazon-ad .product-title {
	flex-basis: 75%;
	padding: var(--space-2);
}
.widget .amazon-ad .product-image {
	flex-basis: 100%;
	padding: var(--space-1);
}
.widget .amazon-ad .product-image img {	
	width: 100%;
	max-width: var(--widget-width-limit);
}
.widget .amazon-ad .product-title {
	flex-basis: 100%;	
	padding: var(--space-1);
}