/*
Theme Name: EXAMBRIEF
Theme URI: https://exambrief.com
Author: hyodorantaro
Description: EXAMBRIEF（exambrief.com）専用テーマ。資格・教育系の報道メディア型レイアウト。白地と罫線を主体にし、記事はカードのグリッドで並べる。
Version: 2.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: exambrief
*/

/* ============================================================
   EXAMBRIEF ─ 資格・教育メディア
   白地・細い罫線・カテゴリ色のアクセントで構成する。
   影やグラデーションは使わず、情報の区切りは線で示す。
   色は既存の藍色（--indigo）と山吹色（--gold）のまま。
   ============================================================ */
:root {
	--ink:    #1a1f2e;
	--sub:    #5e6780;
	--line:   #d5dae6;
	--line2:  #eaeef5;
	--bg:     #ffffff;
	--panel:  #f5f7fb;
	--indigo: #1f4fa8;
	--gold:   #b8791a;
	--wrap:   1180px;
	--ease:   cubic-bezier(.22, .68, .2, 1);
	--dur:    .24s;
	--font:   "IBM Plex Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
	margin: 0;
	background: var(--bg);
	color: var(--ink);
	font-family: var(--font);
	font-size: 16px;
	line-height: 1.85;
	overflow-x: hidden;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 {
	margin: 0 0 .5em;
	line-height: 1.4;
	font-feature-settings: "palt" 1;
	text-wrap: balance;
}
p { margin: 0 0 1em; text-wrap: pretty; }
button, input { font: inherit; }
time, .c-count, .c-cat-count, .c-chip-count, .e-pager .page-numbers { font-variant-numeric: tabular-nums; }
a:focus-visible, button:focus-visible, input:focus-visible {
	outline: 2px solid var(--indigo);
	outline-offset: 2px;
}
::selection { background: var(--indigo); color: #fff; }
.screen-reader-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.e-skip { position: absolute; left: -9999px; }
.e-skip:focus { left: 8px; top: 8px; z-index: 99; background: var(--indigo); color: #fff; padding: 10px 16px; }
.e-wrap { display: block; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.t-right { text-align: right; }

/* ============================================================
   ヘッダー ─ 上段にロゴと検索、下段にカテゴリ
   ============================================================ */
.e-header {
	position: sticky;
	top: 0;
	z-index: 40;
	background: var(--bg);
	border-bottom: 3px solid var(--indigo);
}
.e-header-bar { border-bottom: 1px solid var(--line2); }
.e-header-inner {
	display: flex;
	align-items: center;
	gap: 20px;
	padding: 16px 24px;
}
.e-brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.e-brand-logo {
	display: block;
	height: 38px;
	width: auto;
	max-width: min(280px, 52vw);
	flex: none;
}
.e-brand-sub {
	display: block;
	padding-left: 14px;
	border-left: 1px solid var(--line);
	font-size: 11.5px;
	font-weight: 500;
	line-height: 1.5;
	letter-spacing: .02em;
	color: var(--sub);
	max-width: 230px;
}
.e-header-search { margin-left: auto; flex: none; }
.c-search { display: flex; }
.c-search-input {
	width: 210px;
	padding: 9px 13px;
	border: 1px solid var(--line);
	border-right: none;
	border-radius: 0;
	background: var(--panel);
	font-size: 13.5px;
	color: var(--ink);
	transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.c-search-input::placeholder { color: color-mix(in srgb, var(--sub) 70%, transparent); }
.c-search-input:focus {
	outline: none;
	background: var(--bg);
	border-color: var(--indigo);
}
.c-search-btn {
	display: flex;
	align-items: center;
	padding: 9px 14px;
	border: 1px solid var(--indigo);
	border-radius: 0;
	background: var(--indigo);
	color: #fff;
	cursor: pointer;
	transition: background-color var(--dur) var(--ease);
}
.c-search-btn:hover { background: color-mix(in srgb, var(--indigo) 82%, #000); }

/* カテゴリ帯。現在地はカテゴリ固有色の下線で示す */
.e-header-nav { background: var(--bg); }
.e-topnav ul {
	display: flex;
	overflow-x: auto;
	scrollbar-width: none;
}
.e-topnav ul::-webkit-scrollbar { display: none; }
.e-topnav a {
	display: flex;
	align-items: baseline;
	gap: 6px;
	white-space: nowrap;
	padding: 12px 18px;
	font-size: 14px;
	font-weight: 600;
	color: var(--ink);
	border-bottom: 3px solid transparent;
	margin-bottom: -3px;
	transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.e-topnav a:hover { background: var(--panel); color: var(--c, var(--indigo)); }
.e-topnav a.is-on {
	color: var(--c, var(--indigo));
	border-bottom-color: var(--c, var(--indigo));
}
.c-crumbs { font-size: 12px; color: var(--sub); padding-top: 18px; }
.c-crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; }
.c-crumbs li + li::before { content: "›"; margin-right: 6px; color: var(--line); }
.c-crumbs a:hover { color: var(--indigo); text-decoration: underline; }

/* ============================================================
   見出し ─ 藍色の縦棒＋罫線＋英字ラベル
   ============================================================ */
.e-h1, .e-h2 {
	display: flex;
	align-items: center;
	gap: 14px;
	margin: 0 0 22px;
	padding: 0;
	font-size: 20px;
	font-weight: 700;
	letter-spacing: .02em;
	line-height: 1.3;
}
.e-h1::before, .e-h2::before {
	content: "";
	flex: none;
	width: 5px;
	height: 22px;
	background: var(--indigo);
}
.e-h1::after, .e-h2::after {
	content: "";
	order: 2;
	flex: 1;
	min-width: 20px;
	height: 1px;
	background: var(--line);
}
.e-h2-en {
	order: 3;
	flex: none;
	font-size: 11px;
	font-weight: 600;
	letter-spacing: .18em;
	color: var(--sub);
}
p.e-lead { margin: -10px 0 18px; font-size: 14px; color: var(--sub); }
.c-count { margin: 0 0 14px; font-size: 12px; color: var(--sub); }

/* ============================================================
   トップ ─ ヘッドライン
   ============================================================ */
.e-main { padding-bottom: 76px; }
.e-tagline { padding-top: 20px; }
.e-tagline-text {
	margin: 0;
	font-size: 13px;
	font-weight: 600;
	letter-spacing: .03em;
	line-height: 1.7;
	color: var(--sub);
}
.e-hero { border-bottom: 1px solid var(--line); padding: 18px 0 32px; }
.e-hero-grid {
	display: grid;
	grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
	gap: 32px;
	align-items: start;
}

article.e-lead { position: relative; min-width: 0; }
.e-lead-media {
	display: block;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: var(--panel);
	border-bottom: 3px solid var(--card-color, var(--indigo));
}
.e-lead-media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform .6s var(--ease);
}
article.e-lead:hover .e-lead-media img { transform: scale(1.03); }
.e-lead-body { padding: 16px 0 0; }
.e-lead-top { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.e-lead-top a { position: relative; z-index: 1; }
.e-lead-title {
	margin: 0 0 12px;
	font-size: clamp(21px, 2.4vw, 28px);
	font-weight: 700;
	line-height: 1.45;
	letter-spacing: -.01em;
}
.e-lead-title a::after { content: ""; position: absolute; inset: 0; }
article.e-lead:hover .e-lead-title { color: var(--indigo); }
.e-lead-ex {
	margin: 0 0 12px;
	font-size: 14px;
	line-height: 1.95;
	color: var(--sub);
}
.e-lead-date { font-size: 12px; font-weight: 600; color: var(--sub); }

.e-digest { border-top: 3px solid var(--ink); }
.e-digest-title {
	display: flex;
	align-items: baseline;
	gap: 10px;
	margin: 0;
	padding: 12px 0;
	border-bottom: 1px solid var(--line);
	font-size: 15px;
	font-weight: 700;
}
.e-digest-title span {
	font-size: 10.5px;
	font-weight: 600;
	letter-spacing: .16em;
	color: var(--sub);
}
.e-digest-item { border-bottom: 1px solid var(--line2); }
.e-digest-item a {
	display: grid;
	grid-template-columns: 30px minmax(0, 1fr);
	gap: 10px;
	align-items: start;
	padding: 13px 4px;
	transition: background-color var(--dur) var(--ease);
}
.e-digest-item a:hover { background: var(--panel); }
.e-digest-num {
	padding-top: 1px;
	font-size: 13px;
	font-weight: 700;
	color: var(--indigo);
	font-variant-numeric: tabular-nums;
}
.e-digest-main { min-width: 0; }
.e-digest-link {
	display: block;
	margin-bottom: 3px;
	font-size: 14px;
	font-weight: 600;
	line-height: 1.6;
}
.e-digest-item a:hover .e-digest-link { color: var(--indigo); }
.e-digest-date { display: block; font-size: 11.5px; color: var(--sub); }

/* ============================================================
   レイアウト
   ============================================================ */
.e-layout { display: grid; padding-top: 38px; gap: 40px; }
.e-layout-2 { grid-template-columns: minmax(0, 1fr) 290px; }
.e-content-col { min-width: 0; }

/* ============================================================
   記事カードのグリッド
   ============================================================ */
.e-list {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 30px 24px;
}
.e-card { position: relative; min-width: 0; }
.e-card-media {
	display: block;
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--panel);
	border-bottom: 2px solid var(--card-color, var(--indigo));
}
.e-card-media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform .55s var(--ease);
}
.e-card:hover .e-card-media img { transform: scale(1.04); }
.e-card-body { padding: 12px 0 0; }
.e-card-top { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 8px; }
.e-card-top a { position: relative; z-index: 1; }
.e-card-title {
	margin: 0 0 8px;
	font-size: 16.5px;
	font-weight: 700;
	line-height: 1.55;
}
.e-card-title a::after { content: ""; position: absolute; inset: 0; }
.e-card:hover .e-card-title { color: var(--indigo); }
.e-card-ex {
	margin: 0 0 8px;
	font-size: 13px;
	line-height: 1.8;
	color: var(--sub);
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
}
.e-card-date { font-size: 11.5px; font-weight: 600; color: var(--sub); }

/* ---------- ラベル類 ---------- */
.c-badge {
	display: inline-block;
	padding: 3px 10px;
	background: var(--badge-color, var(--indigo));
	color: #fff;
	font-size: 10.5px;
	font-weight: 700;
	letter-spacing: .04em;
	line-height: 1.6;
	font-feature-settings: "palt" 1;
}
.c-new {
	display: inline-block;
	padding: 3px 8px;
	background: #c8451f;
	color: #fff;
	font-size: 10px;
	font-weight: 700;
	line-height: 1.6;
	letter-spacing: .08em;
}
.c-thumb-fallback {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 100%;
	background: var(--badge-color, var(--indigo));
}
.c-thumb-fallback span {
	padding: 4px;
	color: #fff;
	font-size: 11.5px;
	font-weight: 700;
	letter-spacing: .06em;
	text-align: center;
}
.c-pv {
	display: inline-flex;
	align-items: center;
	gap: 5px;
	font-size: 11px;
	font-weight: 600;
	color: var(--sub);
}
.c-pv-bars { display: flex; align-items: flex-end; gap: 1.5px; height: 10px; }
.c-pv-bars i { width: 3px; background: var(--line); }
.c-pv-bars i:nth-child(1) { height: 4px; }
.c-pv-bars i:nth-child(2) { height: 7px; }
.c-pv-bars i:nth-child(3) { height: 10px; }
.c-pv-1 .c-pv-bars i:nth-child(1),
.c-pv-2 .c-pv-bars i:nth-child(-n+2),
.c-pv-3 .c-pv-bars i { background: var(--gold); }

.c-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.c-chip {
	padding: 4px 11px;
	border: 1px solid var(--line);
	background: var(--bg);
	font-size: 11.5px;
	line-height: 1.7;
	color: var(--sub);
	transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.c-chip:hover { border-color: var(--indigo); color: var(--indigo); background: var(--panel); }
.c-chip-count { margin-left: 4px; opacity: .6; }

.e-empty {
	padding: 52px 20px;
	border: 1px solid var(--line);
	background: var(--panel);
	text-align: center;
	color: var(--sub);
}

/* ---------- ページ送り ---------- */
.e-pager { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); }
.e-pager .page-numbers {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 42px;
	min-height: 42px;
	margin: 0 4px 6px 0;
	padding: 8px 12px;
	border: 1px solid var(--line);
	background: var(--bg);
	font-size: 14px;
	font-weight: 600;
	transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.e-pager .page-numbers:hover { border-color: var(--indigo); color: var(--indigo); background: var(--panel); }
.e-pager .page-numbers.current {
	background: var(--indigo);
	border-color: var(--indigo);
	color: #fff;
}

/* ============================================================
   記事ページ
   ============================================================ */
.e-single { min-width: 0; }
.e-single-head { padding-bottom: 18px; border-bottom: 3px solid var(--ink); margin-bottom: 26px; }
.e-single-labels { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.e-single-head h1 {
	margin: 14px 0 14px;
	font-size: clamp(23px, 3vw, 32px);
	font-weight: 700;
	line-height: 1.4;
	letter-spacing: -.01em;
}
.e-single-meta {
	display: flex;
	flex-wrap: wrap;
	gap: 6px 18px;
	font-size: 12.5px;
	color: var(--sub);
}
.e-single-thumb {
	margin: 0 0 28px;
	background: var(--panel);
	text-align: center;
}
.e-single-thumb img { margin: 0 auto; }

/* 目次（assets/main.js が本文の先頭に挿入する） */
.c-toc {
	margin: 0 0 28px;
	padding: 16px 20px 14px;
	border: 1px solid var(--line);
	border-left: 4px solid var(--indigo);
	background: var(--panel);
}
.c-toc-title {
	margin: 0 0 8px;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: .14em;
	color: var(--indigo);
}
.c-toc ol { counter-reset: toc; }
.c-toc li { counter-increment: toc; font-size: 13.5px; line-height: 1.85; }
.c-toc li::before {
	content: counter(toc) ".";
	margin-right: 7px;
	font-weight: 700;
	color: var(--indigo);
	font-variant-numeric: tabular-nums;
}
.c-toc a:hover { color: var(--indigo); text-decoration: underline; text-underline-offset: 3px; }

.e-content {
	overflow-wrap: anywhere;
	font-size: 16.5px;
	line-height: 2;
	font-feature-settings: "palt" 1;
}
.e-content > * + * { margin-top: 1.05em; }
.e-content > p:first-of-type { font-size: 1.03em; }
.e-content h2 {
	margin: 2.2em 0 .8em;
	padding: 6px 0 6px 16px;
	border-left: 5px solid var(--indigo);
	font-size: 20.5px;
	font-weight: 700;
	line-height: 1.5;
}
.e-content h3 {
	margin: 1.8em 0 .6em;
	padding-bottom: 7px;
	border-bottom: 1px solid var(--line);
	font-size: 17.5px;
	font-weight: 700;
}
.e-content ul li { list-style: disc; margin-left: 1.5em; margin-bottom: .4em; }
.e-content ol li { list-style: decimal; margin-left: 1.6em; margin-bottom: .4em; }
.e-content a {
	color: var(--indigo);
	text-decoration: underline;
	text-underline-offset: 4px;
	text-decoration-thickness: 1px;
	text-decoration-color: color-mix(in srgb, var(--indigo) 40%, transparent);
	transition: text-decoration-color var(--dur) var(--ease);
}
.e-content a:hover { text-decoration-color: var(--indigo); }
.e-content img { margin-left: auto; margin-right: auto; width: auto; max-width: 100%; height: auto; }
.e-content figure { margin: 1.5em 0; text-align: center; }
.e-content figure img { margin: 0 auto; }
.e-content figcaption { margin-top: 8px; font-size: 12px; color: var(--sub); }
.e-content table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.e-content th, .e-content td { border: 1px solid var(--line); padding: 11px 13px; text-align: left; }
.e-content th { background: var(--panel); width: 30%; font-weight: 700; }
.e-content blockquote {
	padding: 14px 18px;
	border-left: 4px solid var(--gold);
	background: var(--panel);
	color: var(--sub);
}
.e-content code {
	padding: 2px 6px;
	border: 1px solid var(--line);
	background: var(--panel);
	font-size: .92em;
}

/* ---------- 記事の付属ブロック ---------- */
.c-source {
	margin-top: 28px;
	padding: 16px 18px;
	border: 1px solid var(--line);
	border-top: 3px solid var(--gold);
	background: var(--panel);
	font-size: 13px;
	color: var(--sub);
}
.c-source-title {
	margin: 0 0 6px;
	font-size: 11px;
	font-weight: 700;
	letter-spacing: .14em;
	color: var(--gold);
}
.c-source a { color: var(--indigo); text-decoration: underline; text-underline-offset: 3px; }
.c-source-note { margin: 8px 0 0; font-size: 12px; }
.c-post-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 28px; }
.c-disclaimer {
	margin-top: 24px;
	padding: 16px 18px;
	border: 1px solid var(--line);
	background: var(--panel);
	font-size: 12.5px;
	color: var(--sub);
}
.c-disclaimer-title {
	margin: 0 0 6px;
	font-size: 11px;
	font-weight: 700;
	letter-spacing: .14em;
	color: var(--ink);
}
.c-disclaimer p:last-child { margin-bottom: 0; }
.c-ai-welcome {
	margin-top: 24px;
	padding: 16px 18px;
	border: 1px solid var(--line);
	border-left: 4px solid var(--indigo);
	background: var(--panel);
	font-size: 13px;
	color: var(--sub);
}
.c-ai-welcome-title {
	margin: 0 0 8px;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: .1em;
	color: var(--indigo);
}
.c-ai-welcome p { margin: 0 0 10px; }
.c-ai-welcome-cite span {
	display: block;
	margin-bottom: 4px;
	font-size: 11px;
	font-weight: 700;
	letter-spacing: .06em;
	color: var(--ink);
}
.c-ai-welcome-cite code {
	display: block;
	padding: 10px 12px;
	border: 1px solid var(--line);
	background: var(--bg);
	font-size: 12px;
	line-height: 1.6;
	color: var(--ink);
	word-break: break-all;
	white-space: pre-wrap;
}
.c-ai-welcome-links { margin: 0 !important; font-size: 12px; }
.c-ai-welcome-links a { color: var(--indigo); text-decoration: underline; text-underline-offset: 2px; }

.c-share { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.c-share-label { font-size: 11px; font-weight: 700; letter-spacing: .14em; color: var(--sub); }
.c-share-btn {
	padding: 8px 16px;
	border: 1px solid var(--line);
	background: var(--bg);
	font-size: 12.5px;
	font-weight: 600;
	transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.c-share-btn:hover { background: var(--indigo); border-color: var(--indigo); color: #fff; }

.e-postnav {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1px;
	margin-top: 34px;
	background: var(--line);
	border: 1px solid var(--line);
	font-size: 13px;
}
.e-postnav > div { background: var(--bg); }
.e-postnav a {
	display: block;
	padding: 15px 17px;
	line-height: 1.6;
	transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.e-postnav a:hover { background: var(--panel); color: var(--indigo); }

.c-related { margin-top: 44px; }
.c-block-title {
	display: flex;
	align-items: center;
	gap: 12px;
	margin: 0 0 16px;
	font-size: 16px;
	font-weight: 700;
}
.c-block-title::before { content: ""; flex: none; width: 5px; height: 19px; background: var(--indigo); }
.c-block-title::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.c-related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.c-related-item { display: block; transition: color var(--dur) var(--ease); }
.c-related-thumb {
	display: block;
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--panel);
	border-bottom: 2px solid var(--line);
	transition: border-color var(--dur) var(--ease);
}
.c-related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.c-related-item:hover .c-related-thumb { border-bottom-color: var(--indigo); }
.c-related-item:hover .c-related-thumb img { transform: scale(1.04); }
.c-related-body { display: block; padding: 10px 0 0; }
.c-related-cat {
	display: block;
	margin-bottom: 4px;
	font-size: 10.5px;
	font-weight: 700;
	letter-spacing: .04em;
	color: var(--indigo);
}
.c-related-title { display: block; font-size: 13.5px; font-weight: 600; line-height: 1.6; }
.c-related-item:hover .c-related-title { color: var(--indigo); }
.c-comments { margin-top: 44px; padding-top: 26px; border-top: 3px solid var(--ink); }

/* ============================================================
   右サイド
   ============================================================ */
.e-side { display: flex; flex-direction: column; gap: 30px; min-width: 0; }
.c-widget { min-width: 0; }
.c-widget-title {
	display: flex;
	align-items: center;
	gap: 10px;
	margin: 0 0 12px;
	padding-bottom: 10px;
	border-bottom: 2px solid var(--ink);
	font-size: 14px;
	font-weight: 700;
	letter-spacing: .04em;
	color: var(--ink);
}
.c-widget-title::before { content: ""; flex: none; width: 4px; height: 17px; background: var(--indigo); }
.c-rank li {
	display: flex;
	gap: 10px;
	align-items: flex-start;
	padding: 11px 0;
	border-bottom: 1px solid var(--line2);
}
.c-rank li:last-child { border-bottom: none; }
.c-rank-num {
	display: flex;
	align-items: center;
	justify-content: center;
	flex: none;
	width: 21px;
	height: 21px;
	background: var(--indigo);
	color: #fff;
	font-size: 11px;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}
.c-rank li:nth-child(n+4) .c-rank-num { background: var(--sub); }
.c-rank-link { display: grid; grid-template-columns: 108px minmax(0, 1fr); gap: 12px; align-items: start; min-width: 0; }
.c-rank-thumb {
	display: block;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	background: var(--panel);
	box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ink) 8%, transparent);
}
.c-rank-thumb img { width: 100%; height: 100%; object-fit: cover; }
.c-rank-noimg { display: block; width: 100%; height: 100%; background: var(--panel); }
.c-rank-title {
	display: -webkit-box;
	-webkit-line-clamp: 4;
	-webkit-box-orient: vertical;
	overflow: hidden;
	font-size: 13.5px;
	font-weight: 600;
	line-height: 1.55;
}
.c-rank a:hover .c-rank-title { color: var(--indigo); }
.c-cat-list li { padding: 11px 0; border-bottom: 1px solid var(--line2); }
.c-cat-list li:last-child { border-bottom: none; }
.c-cat-list a {
	display: flex;
	align-items: baseline;
	gap: 8px;
	border-left: 3px solid var(--badge-color, var(--indigo));
	padding-left: 9px;
}
.c-cat-name { font-size: 13.5px; font-weight: 700; }
.c-cat-count { margin-left: auto; font-size: 11.5px; color: var(--sub); }
.c-cat-desc { display: block; margin-top: 3px; padding-left: 12px; font-size: 11.5px; line-height: 1.6; color: var(--sub); }
.c-cat-list a:hover .c-cat-name { color: var(--indigo); }

/* ============================================================
   おすすめ記事の帯
   ============================================================ */
.c-flow { padding: 18px 0 20px; border-bottom: 1px solid var(--line); background: var(--panel); overflow: hidden; }
.c-flow-label {
	display: flex;
	align-items: baseline;
	gap: 10px;
	margin: 0 0 14px;
	font-size: 13px;
	font-weight: 700;
	color: var(--ink);
}
.c-flow-label span { font-size: 10.5px; font-weight: 600; letter-spacing: .16em; color: var(--sub); }
.c-flow-viewport { overflow: hidden; }
.c-flow-track {
	display: flex;
	gap: 16px;
	width: max-content;
	animation: e-flow var(--flow-duration, 40s) linear infinite;
}
@keyframes e-flow {
	from { transform: translateX(0); }
	to { transform: translateX(-50%); }
}
.c-flow-viewport:hover .c-flow-track { animation-play-state: paused; }
.c-flow-card {
	display: flex;
	flex-direction: column;
	width: 220px;
	flex: none;
	border: 1px solid var(--line);
	background: var(--bg);
	transition: border-color var(--dur) var(--ease);
}
.c-flow-card:hover { border-color: var(--indigo); }
.c-flow-thumb {
	display: block;
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--panel);
}
.c-flow-thumb img { width: 100%; height: 100%; object-fit: cover; }
.c-flow-card-title {
	display: block;
	padding: 12px 13px 14px;
	font-size: 13.5px;
	font-weight: 600;
	line-height: 1.55;
}
.c-flow-card:hover .c-flow-card-title { color: var(--indigo); }
.c-flow-card-titletext {
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
	height: auto;
	max-height: 4.65em;
}

/* ============================================================
   固定ページ・404
   ============================================================ */
.c-page { padding: 34px 0 72px; }
.c-page-inner { max-width: 840px; margin: 0 auto; padding: 0 24px; }
.c-page-title {
	margin: 0 0 24px;
	padding-bottom: 16px;
	border-bottom: 3px solid var(--ink);
	font-size: clamp(22px, 3vw, 28px);
	font-weight: 700;
}
.c-page-body {
	overflow-wrap: anywhere;
	font-size: 15.5px;
	line-height: 2;
	font-feature-settings: "palt" 1;
}
.c-page-body h2 {
	margin: 1.9em 0 .6em;
	padding-left: 14px;
	border-left: 5px solid var(--indigo);
	font-size: 19px;
	font-weight: 700;
}
.c-page-body ul li { list-style: disc; margin-left: 1.5em; margin-bottom: .3em; }
.c-page-body a { color: var(--indigo); text-decoration: underline; text-underline-offset: 3px; }
.c-404 { text-align: center; }
.c-404-code { margin: 0; font-size: 72px; font-weight: 700; line-height: 1; color: var(--indigo); }
.c-404 .c-page-title { border-bottom: none; }
.c-404 .c-search { justify-content: center; margin: 22px 0; }
.c-404-home { color: var(--indigo); text-decoration: underline; font-weight: 700; }

/* ============================================================
   フッター
   ============================================================ */
.e-footer {
	background: var(--ink);
	color: #b9bec9;
	padding: 40px 0 28px;
	margin-top: 0;
	border-top: 3px solid var(--indigo);
}
.e-footer a { color: #c5cad6; transition: color var(--dur) var(--ease); }
.e-footer a:hover { color: #fff; }

.e-footer-top {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 14px 22px;
	padding-bottom: 22px;
	border-bottom: 1px solid color-mix(in srgb, #fff 12%, transparent);
}
.e-footer-brand { display: block; flex: none; line-height: 0; }
.e-footer-logo {
	display: block;
	height: 34px;
	width: auto;
	max-width: min(260px, 70vw);
}
.e-footer-tagline {
	margin: 0;
	font-size: 12.5px;
	line-height: 1.6;
	color: #9aa3b5;
	max-width: 420px;
}

.e-footer-mid {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 12px 20px;
	padding: 18px 0;
	border-bottom: 1px solid color-mix(in srgb, #fff 12%, transparent);
}
.e-footer-nav { flex: 1; min-width: 0; }
.e-footer-nav ul { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.e-footer-nav a {
	font-size: 13.5px;
	font-weight: 600;
}
.e-totop {
	margin-left: auto;
	flex: none;
	font-size: 12.5px;
	font-weight: 600;
	white-space: nowrap;
}

.e-footer-bottom {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 8px 20px;
	padding-top: 18px;
}
.e-footer-copy { margin: 0; font-size: 12px; color: #8b93a5; }
.e-footer-ai { margin: 0; font-size: 12px; color: #8b93a5; }
.e-footer-ai a {
	color: #c9d4ea;
	text-decoration: underline;
	text-underline-offset: 2px;
}
.e-footer-ai a:hover { color: #fff; }

/* ============================================================
   動き
   ============================================================ */
a, button, input { transition: color var(--dur) var(--ease); }
@supports (animation-timeline: view()) {
	@media (prefers-reduced-motion: no-preference) {
		.e-card {
			animation: e-rise linear both;
			animation-timeline: view();
			animation-range: entry 0% entry 32%;
		}
		@keyframes e-rise {
			from { opacity: 0; translate: 0 12px; }
			to { opacity: 1; translate: none; }
		}
	}
}
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	.c-flow-track { animation: none; }
	.e-card { animation: none; }
	.e-card-media img, .e-lead-media img, .c-related-thumb img { transition: none; }
}

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 1080px) {
	.e-layout-2 { grid-template-columns: minmax(0, 1fr) 260px; }
}
@media (max-width: 940px) {
	.e-hero-grid { grid-template-columns: 1fr; gap: 26px; }
	.e-header-inner { flex-wrap: wrap; gap: 12px 18px; }
	.e-brand { flex: 1; }
	.e-header-search { margin-left: auto; }
	.c-search-input { width: 160px; }
}
@media (max-width: 860px) {
	.e-layout, .e-layout-2 { grid-template-columns: 1fr; gap: 40px; }
	.e-side { flex-direction: row; flex-wrap: wrap; gap: 26px; }
	.e-side .c-widget { flex: 1 1 260px; }
	.c-related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
	.e-list { grid-template-columns: 1fr; gap: 0; }
	/* 1列のときはカードを横並びの行にして、1画面に多く収める */
	.e-card {
		display: grid;
		grid-template-columns: 116px minmax(0, 1fr);
		gap: 14px;
		align-items: start;
		padding: 16px 0;
		border-bottom: 1px solid var(--line2);
	}
	.e-card:last-child { border-bottom: none; }
	.e-card-media { aspect-ratio: 4 / 3; }
	.e-card-body { padding: 0; }
	.e-card-title { font-size: 15px; margin-bottom: 6px; }
	.e-card-ex { display: none; }
	.e-topnav a { padding: 11px 13px; font-size: 13px; }
	.e-hero { padding: 20px 0 24px; }
	.e-postnav { grid-template-columns: 1fr; }
	.c-related-grid { grid-template-columns: 1fr; gap: 0; }
	.c-related-item {
		display: grid;
		grid-template-columns: 110px minmax(0, 1fr);
		gap: 12px;
		align-items: start;
		padding: 14px 0;
		border-bottom: 1px solid var(--line2);
	}
	.c-related-item:last-child { border-bottom: none; }
	.c-related-body { padding: 0; }
	.c-flow-card { width: 180px; }
}
@media (max-width: 480px) {
	body { font-size: 15px; }
	.e-wrap { padding: 0 16px; }
	.e-header-inner { padding: 13px 16px; }
	.e-brand-logo { height: 32px; max-width: min(210px, 60vw); }
	.e-brand-sub { display: none; }
	.e-header-search { width: 100%; margin-left: 0; }
	.c-search, .c-search-input { width: 100%; }
	.e-h1, .e-h2 { font-size: 17.5px; gap: 10px; }
	.e-single-head h1 { font-size: 21px; }
	.e-content { font-size: 15.5px; }
	.e-content h2 { font-size: 18px; }
	.e-content table { display: block; overflow-x: auto; white-space: nowrap; }
	.c-page-inner { padding: 0 16px; }
	.e-footer { padding: 32px 0 24px; }
	.e-footer-logo { height: 28px; }
	.e-footer-mid { align-items: flex-start; }
	.e-totop { margin-left: 0; width: 100%; }
}