/* =====================================================================
 * Power Holdings — Column (Blog) Styles
 * =====================================================================
 * - 一覧（archive / home）
 * - 詳細（single）
 * - サイドバー / 目次 / 関連記事 / 著者ボックス / シェアボタン
 * - トップページのコラムセクション
 * ===================================================================== */

:root {
	--ph-col-bg: #fafbfc;
	--ph-col-card: #ffffff;
	--ph-col-border: #e5ebf2;
	--ph-col-border-soft: #eef2f7;
	--ph-col-heading: #0b1d3a;
	--ph-col-body: #334155;
	--ph-col-muted: #64748b;
	--ph-col-accent: var(--brand, #166fba);
	--ph-col-accent-2: #00bcd4;
	--ph-col-radius: 16px;
	--ph-col-radius-lg: 24px;
	--ph-col-shadow: 0 1px 2px rgba(11, 29, 58, 0.04), 0 12px 28px -16px rgba(11, 29, 58, 0.12);
	--ph-col-shadow-hover: 0 2px 4px rgba(11, 29, 58, 0.06), 0 24px 48px -20px rgba(11, 29, 58, 0.22);
}

/* ============================================================
 * BREADCRUMB
 * ============================================================ */
.ph-breadcrumb { font-family: var(--fn, "Inter", sans-serif); font-size: 12px; color: rgba(255,255,255,0.7); letter-spacing: 0.04em; }
.ph-breadcrumb__list { display: flex; flex-wrap: wrap; gap: 6px 10px; }
.ph-breadcrumb__item { display: inline-flex; align-items: center; gap: 10px; }
.ph-breadcrumb__item + .ph-breadcrumb__item::before { content: "/"; color: rgba(255,255,255,0.35); }
.ph-breadcrumb__link { color: rgba(255,255,255,0.7); transition: color .25s var(--ease); }
.ph-breadcrumb__link:hover { color: #fff; }
.ph-breadcrumb__current { color: #fff; }

/* ============================================================
 * COLUMN HERO (single)
 * ============================================================ */
.ph-column-hero {
	position: relative;
	padding: 160px 0 80px;
	background: linear-gradient(135deg, #061226 0%, #0b1d3a 50%, #122a4f 100%);
	overflow: hidden;
	color: #fff;
}
.ph-column-hero__bg {
	position: absolute; inset: 0;
	background:
		radial-gradient(ellipse at 20% 10%, rgba(22,111,186,0.35), transparent 50%),
		radial-gradient(ellipse at 80% 80%, rgba(0,188,212,0.25), transparent 50%);
	opacity: 0.85;
	pointer-events: none;
}
.ph-column-hero__bg-text {
	position: absolute;
	font-family: var(--fn-display, "Outfit", sans-serif);
	font-size: clamp(140px, 22vw, 320px);
	font-weight: 900;
	color: rgba(255,255,255,0.04);
	letter-spacing: -0.04em;
	bottom: -40px;
	right: -20px;
	line-height: 1;
	pointer-events: none;
	user-select: none;
}
.ph-column-hero #particles-column-hero { position: absolute; inset: 0; width: 100%; height: 100%; }

.ph-column-hero__inner {
	position: relative;
	max-width: 920px;
	padding: 0 24px;
	margin: 0 auto;
}
.ph-column-hero__crumb { margin-bottom: 36px; }

.ph-column-hero__cat {
	display: inline-flex; align-items: center; gap: 8px;
	padding: 6px 14px;
	border: 1px solid rgba(255,255,255,0.3);
	border-radius: 999px;
	font-family: var(--fn-display);
	font-size: 12px;
	letter-spacing: 0.06em;
	color: #fff;
	background: rgba(255,255,255,0.05);
	backdrop-filter: blur(6px);
	transition: background .25s var(--ease), border-color .25s var(--ease);
}
.ph-column-hero__cat:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.5); }
.ph-column-hero__cat-dot { width: 6px; height: 6px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--ph-col-accent-2)); box-shadow: 0 0 8px rgba(0,188,212,0.6); }

.ph-column-hero__title {
	margin-top: 20px;
	font-family: "Noto Sans JP", sans-serif;
	font-weight: 800;
	font-size: clamp(26px, 4vw, 44px);
	line-height: 1.4;
	letter-spacing: 0.01em;
	color: #fff;
}

.ph-column-hero__meta {
	margin-top: 28px;
	display: flex; flex-wrap: wrap; gap: 8px 18px;
	font-size: 13px;
	color: rgba(255,255,255,0.75);
}
.ph-column-hero__meta-item { display: inline-flex; align-items: center; gap: 6px; }
.ph-column-hero__meta-item svg { opacity: 0.7; }

/* ============================================================
 * EYECATCH
 * ============================================================ */
.ph-column-eyecatch {
	max-width: 1080px;
	margin: -64px auto 0;
	padding: 0 24px;
	position: relative;
	z-index: 1;
}
.ph-column-eyecatch img {
	width: 100%;
	aspect-ratio: 16/9;
	object-fit: cover;
	border-radius: var(--ph-col-radius-lg);
	box-shadow: 0 30px 80px -30px rgba(11,29,58,0.45);
}

/* ============================================================
 * BODY LAYOUT
 * ============================================================ */
.ph-column-body { background: var(--ph-col-bg); padding: 80px 0 100px; position: relative; }
.ph-column-body__inner {
	max-width: 1240px;
	margin: 0 auto;
	padding: 0 24px;
	display: grid;
	grid-template-columns: minmax(0, 1fr) 320px;
	gap: 56px;
}
@media (max-width: 1024px) {
	.ph-column-body__inner { grid-template-columns: 1fr; gap: 48px; }
}

.ph-column-main { min-width: 0; }

/* ============================================================
 * CONTENT (entry)
 * ============================================================ */
.ph-column-content.ph-entry-content {
	background: var(--ph-col-card);
	padding: 56px clamp(24px, 5vw, 72px);
	border-radius: var(--ph-col-radius-lg);
	box-shadow: var(--ph-col-shadow);
	font-size: 16px;
	line-height: 1.95;
	color: var(--ph-col-body);
}
.ph-column-content.ph-entry-content > :first-child { margin-top: 0; }
.ph-column-content.ph-entry-content > :last-child { margin-bottom: 0; }

.ph-column-content h2 {
	position: relative;
	font-family: "Noto Sans JP", sans-serif;
	font-weight: 800;
	font-size: clamp(20px, 2.4vw, 26px);
	line-height: 1.5;
	margin: 64px 0 24px;
	padding: 4px 0 16px 18px;
	color: var(--ph-col-heading);
	border-bottom: 1px solid var(--ph-col-border-soft);
	letter-spacing: 0.01em;
}
.ph-column-content h2::before {
	content: "";
	position: absolute;
	left: 0; top: 6px; bottom: 14px;
	width: 4px;
	border-radius: 2px;
	background: linear-gradient(180deg, var(--brand) 0%, var(--ph-col-accent-2) 100%);
}

.ph-column-content h3 {
	font-family: "Noto Sans JP", sans-serif;
	font-weight: 700;
	font-size: clamp(17px, 2vw, 20px);
	line-height: 1.55;
	margin: 40px 0 16px;
	color: var(--ph-col-heading);
	padding-left: 14px;
	border-left: 3px solid var(--brand);
}

.ph-column-content h4 {
	font-family: "Noto Sans JP", sans-serif;
	font-weight: 700;
	font-size: 17px;
	margin: 32px 0 12px;
	color: var(--ph-col-heading);
}

.ph-column-content p { margin: 0 0 1.6em; }
.ph-column-content a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; transition: color .25s var(--ease); }
.ph-column-content a:hover { color: var(--ph-col-accent-2); }

.ph-column-content ul,
.ph-column-content ol { margin: 0 0 1.6em; padding-left: 1.2em; }
.ph-column-content ul li,
.ph-column-content ol li { margin-bottom: 0.5em; }
.ph-column-content ul li::marker { color: var(--brand); }

.ph-column-content blockquote {
	margin: 32px 0;
	padding: 24px 28px;
	border-left: 4px solid var(--brand);
	background: linear-gradient(135deg, rgba(22,111,186,0.04), rgba(0,188,212,0.03));
	border-radius: 0 12px 12px 0;
	color: var(--ph-col-heading);
	font-style: normal;
}
.ph-column-content blockquote p:last-child { margin-bottom: 0; }

.ph-column-content code {
	font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
	font-size: 0.92em;
	padding: 2px 6px;
	background: #f1f5f9;
	border-radius: 4px;
	color: #c026d3;
}
.ph-column-content pre {
	background: #0b1d3a;
	color: #e2e8f0;
	padding: 20px 24px;
	border-radius: 12px;
	overflow-x: auto;
	margin: 24px 0;
	font-size: 14px;
	line-height: 1.7;
}
.ph-column-content pre code { background: transparent; padding: 0; color: inherit; }

.ph-column-content img,
.ph-column-content figure {
	max-width: 100%;
	height: auto;
	margin: 32px auto;
	border-radius: 12px;
}
.ph-column-content figure img { border-radius: 12px; }
.ph-column-content figure figcaption { text-align: center; font-size: 13px; color: var(--ph-col-muted); margin-top: 10px; }

.ph-column-content table {
	width: 100%;
	margin: 28px 0;
	border-collapse: collapse;
	font-size: 14px;
}
.ph-column-content th,
.ph-column-content td { padding: 12px 16px; border-bottom: 1px solid var(--ph-col-border); text-align: left; }
.ph-column-content th { background: #f8fafc; font-weight: 700; color: var(--ph-col-heading); }

.ph-column-content hr { border: 0; height: 1px; background: var(--ph-col-border); margin: 48px 0; }

/* ============================================================
 * TOC (Table of Contents)
 * ============================================================ */
.ph-toc {
	background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
	border: 1px solid var(--ph-col-border);
	border-radius: 14px;
	padding: 24px 28px;
	margin: 0 0 48px;
}
.ph-toc__head { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--ph-col-heading); }
.ph-toc__icon { color: var(--brand); flex-shrink: 0; }
.ph-toc__title { font-family: "Noto Sans JP", sans-serif; font-weight: 800; font-size: 15px; letter-spacing: 0.05em; }
.ph-toc__list { list-style: none; padding: 0; margin: 0; }
.ph-toc__item { margin: 0; }
.ph-toc__link {
	display: flex; align-items: baseline; gap: 12px;
	padding: 8px 0;
	color: var(--ph-col-body);
	font-size: 14px;
	line-height: 1.6;
	border-bottom: 1px dashed transparent;
	transition: color .25s var(--ease), border-color .25s var(--ease);
}
.ph-toc__link:hover { color: var(--brand); border-bottom-color: rgba(22,111,186,0.2); }
.ph-toc__link.is-active { color: var(--brand); font-weight: 700; }
.ph-toc__num {
	flex-shrink: 0;
	font-family: var(--fn-display);
	font-size: 11px;
	font-weight: 700;
	color: var(--brand);
	letter-spacing: 0.05em;
	min-width: 22px;
}
.ph-toc__text { flex: 1; }

/* ---- Accordion (本文中の目次) ---- */
.ph-toc--accordion .ph-toc__toggle {
	display: flex;
	align-items: center;
	gap: 10px;
	width: 100%;
	margin: 0;
	padding: 0;
	background: transparent;
	border: 0;
	color: var(--ph-col-heading);
	font: inherit;
	text-align: left;
	cursor: pointer;
}
.ph-toc--accordion .ph-toc__toggle:focus-visible {
	outline: 2px solid var(--brand);
	outline-offset: 4px;
	border-radius: 4px;
}
.ph-toc--accordion .ph-toc__chevron {
	margin-left: auto;
	display: inline-flex;
	align-items: center;
	color: var(--ph-col-muted);
	transition: transform .25s var(--ease), color .25s var(--ease);
}
.ph-toc--accordion.is-expanded .ph-toc__chevron {
	transform: rotate(180deg);
	color: var(--brand);
}
.ph-toc--accordion.is-collapsed .ph-toc__toggle { margin-bottom: 0; }
.ph-toc--accordion.is-expanded .ph-toc__toggle { margin-bottom: 16px; }
.ph-toc--accordion .ph-toc__list[hidden] { display: none; }

/* TOC in sidebar */
.ph-toc--sidebar { padding: 20px 22px; margin: 0; max-height: calc(100vh - 140px); overflow-y: auto; }
.ph-toc--sidebar .ph-toc__link { font-size: 13px; padding: 7px 0; line-height: 1.5; }
.ph-toc--sidebar .ph-toc__head { margin-bottom: 12px; }
.ph-toc--sidebar .ph-toc__title { font-size: 13px; }
.ph-toc--sidebar .ph-toc__num { font-size: 10px; min-width: 20px; }

/* ============================================================
 * TAGS / SHARE / AUTHOR
 * ============================================================ */
.ph-column-tags {
	margin: 32px 0 0;
	padding: 24px clamp(24px, 5vw, 56px);
	background: var(--ph-col-card);
	border-radius: var(--ph-col-radius);
	box-shadow: var(--ph-col-shadow);
	display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px;
}
.ph-column-tags__label {
	font-family: var(--fn-display);
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.1em;
	color: var(--ph-col-muted);
	text-transform: uppercase;
}
.ph-column-tags__tag {
	padding: 6px 14px;
	border-radius: 999px;
	background: #f1f5f9;
	color: var(--ph-col-body);
	font-size: 13px;
	transition: background .25s var(--ease), color .25s var(--ease);
}
.ph-column-tags__tag:hover { background: var(--brand); color: #fff; }

.ph-column-share {
	margin: 24px 0 0;
	padding: 28px clamp(24px, 5vw, 56px);
	background: var(--ph-col-card);
	border-radius: var(--ph-col-radius);
	box-shadow: var(--ph-col-shadow);
}
.ph-column-share__label {
	font-family: var(--fn-display);
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.08em;
	color: var(--ph-col-muted);
	text-transform: uppercase;
	margin-bottom: 14px;
}
.ph-column-share__btns { display: flex; flex-wrap: wrap; gap: 10px; }
.ph-column-share__btn {
	display: inline-flex; align-items: center; gap: 8px;
	padding: 10px 18px;
	border-radius: 999px;
	border: 1px solid var(--ph-col-border);
	background: #fff;
	color: var(--ph-col-body);
	font-size: 13px;
	font-weight: 600;
	cursor: pointer;
	transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.ph-column-share__btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px -10px rgba(11,29,58,0.3); }
.ph-column-share__btn--x:hover { background: #000; color: #fff; border-color: #000; }
.ph-column-share__btn--fb:hover { background: #1877f2; color: #fff; border-color: #1877f2; }
.ph-column-share__btn--line:hover { background: #06c755; color: #fff; border-color: #06c755; }
.ph-column-share__btn--copy.is-copied { background: var(--brand); color: #fff; border-color: var(--brand); }

.ph-author {
	margin: 32px 0 0;
	padding: 32px clamp(24px, 5vw, 48px);
	background: linear-gradient(135deg, #0b1d3a 0%, #122a4f 100%);
	color: #fff;
	border-radius: var(--ph-col-radius);
	display: grid;
	grid-template-columns: 96px 1fr;
	gap: 28px;
	align-items: start;
	box-shadow: var(--ph-col-shadow);
	position: relative;
	overflow: hidden;
}
.ph-author::before {
	content: ""; position: absolute; right: -20px; top: -20px;
	width: 200px; height: 200px;
	background: radial-gradient(circle, rgba(0,188,212,0.18), transparent 70%);
	pointer-events: none;
}
.ph-author__avatar-wrap { width: 96px; height: 96px; border-radius: 50%; overflow: hidden; border: 2px solid rgba(255,255,255,0.2); background: #fff; }
.ph-author__avatar { width: 100%; height: 100%; object-fit: cover; }
.ph-author__body { position: relative; }
.ph-author__label { font-family: var(--fn-display); font-size: 11px; font-weight: 700; letter-spacing: 0.1em; color: rgba(255,255,255,0.6); text-transform: uppercase; margin-bottom: 4px; }
.ph-author__name { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.ph-author__bio { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.8); }
.ph-author__url { display: inline-block; margin-top: 12px; font-size: 13px; color: #4fc3f7; }
.ph-author__url:hover { text-decoration: underline; }

@media (max-width: 600px) {
	.ph-author { grid-template-columns: 1fr; text-align: center; }
	.ph-author__avatar-wrap { margin: 0 auto; }
}

/* ============================================================
 * SIDEBAR
 * ============================================================ */
.ph-column-sidebar { min-width: 0; }
.ph-column-sidebar__sticky {
	position: sticky;
	top: 100px;
	display: flex;
	flex-direction: column;
	gap: 24px;
}
@media (max-width: 1024px) {
	.ph-column-sidebar__sticky { position: static; }
}

.ph-column-sidebar__block {
	background: var(--ph-col-card);
	border: 1px solid var(--ph-col-border-soft);
	border-radius: var(--ph-col-radius);
	padding: 24px;
	box-shadow: var(--ph-col-shadow);
}
.ph-column-sidebar__block--toc { padding: 0; background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%); }
.ph-column-sidebar__block--toc .ph-toc { background: transparent; border: 0; padding: 24px; }

.ph-column-sidebar__heading {
	font-family: "Noto Sans JP", sans-serif;
	font-size: 14px;
	font-weight: 800;
	color: var(--ph-col-heading);
	margin-bottom: 16px;
	padding-bottom: 12px;
	border-bottom: 1px solid var(--ph-col-border-soft);
	letter-spacing: 0.04em;
	position: relative;
}
.ph-column-sidebar__heading::after {
	content: "";
	position: absolute;
	left: 0; bottom: -1px;
	width: 32px;
	height: 2px;
	background: linear-gradient(90deg, var(--brand), var(--ph-col-accent-2));
}

.ph-column-sidebar__cat-list { list-style: none; padding: 0; margin: 0; }
.ph-column-sidebar__cat-link {
	display: flex; justify-content: space-between; align-items: center;
	padding: 10px 12px;
	margin: 2px -12px;
	border-radius: 8px;
	font-size: 14px;
	color: var(--ph-col-body);
	transition: background .25s var(--ease), color .25s var(--ease);
}
.ph-column-sidebar__cat-link:hover { background: #f1f5f9; color: var(--brand); }
.ph-column-sidebar__cat-link.is-active { background: linear-gradient(135deg, rgba(22,111,186,0.08), rgba(0,188,212,0.06)); color: var(--brand); font-weight: 700; }
.ph-column-sidebar__cat-count { font-family: var(--fn-display); font-size: 12px; color: var(--ph-col-muted); }

.ph-column-sidebar__pop-list { list-style: none; padding: 0; margin: 0; counter-reset: pop; }
.ph-column-sidebar__pop-item { margin: 0; }
.ph-column-sidebar__pop-link {
	display: grid;
	grid-template-columns: 24px 1fr;
	grid-template-rows: auto auto;
	column-gap: 12px;
	row-gap: 6px;
	align-items: start;
	padding: 14px 0;
	border-bottom: 1px solid var(--ph-col-border-soft);
	transition: opacity .25s var(--ease);
}
.ph-column-sidebar__pop-item:last-child .ph-column-sidebar__pop-link { border-bottom: 0; }
.ph-column-sidebar__pop-link:hover { opacity: 0.7; }
.ph-column-sidebar__pop-rank {
	grid-row: 1 / 3;
	grid-column: 1;
	font-family: var(--fn-display);
	font-size: 14px;
	font-weight: 800;
	color: var(--brand);
	padding-top: 1px;
	letter-spacing: 0.02em;
}
.ph-column-sidebar__pop-thumb {
	grid-row: 2;
	grid-column: 2;
	width: 100%;
	max-width: 88px;
	aspect-ratio: 4/3;
	border-radius: 6px;
	overflow: hidden;
	background: var(--ph-col-border-soft);
	display: none; /* タイトルを優先表示するため、サムネは隠す */
}
.ph-column-sidebar__pop-thumb img { width: 100%; height: 100%; object-fit: cover; }
.ph-column-sidebar__pop-title {
	grid-row: 1;
	grid-column: 2;
	font-size: 13px;
	font-weight: 600;
	line-height: 1.6;
	color: var(--ph-col-heading);
	display: -webkit-box;
	-webkit-line-clamp: 3;
	-webkit-box-orient: vertical;
	overflow: hidden;
	word-break: break-word;
}
.ph-column-sidebar__pop-link:hover .ph-column-sidebar__pop-title { color: var(--brand); }

.ph-column-sidebar__block--cta {
	background: linear-gradient(135deg, #0b1d3a 0%, #122a4f 100%);
	color: #fff;
	border: 0;
	position: relative;
	overflow: hidden;
}
.ph-column-sidebar__block--cta::before {
	content: "";
	position: absolute;
	right: -30px; top: -30px;
	width: 140px; height: 140px;
	background: radial-gradient(circle, rgba(0,188,212,0.2), transparent 70%);
	pointer-events: none;
}
.ph-column-sidebar__cta-label { font-family: var(--fn-display); font-size: 11px; letter-spacing: 0.1em; color: rgba(255,255,255,0.7); text-transform: uppercase; margin-bottom: 8px; position: relative; }
.ph-column-sidebar__cta-title { font-size: 18px; font-weight: 800; line-height: 1.5; margin-bottom: 18px; position: relative; }
.ph-column-sidebar__cta-btn {
	position: relative;
	display: inline-flex; align-items: center; gap: 8px;
	padding: 12px 20px;
	background: linear-gradient(135deg, var(--brand), var(--ph-col-accent-2));
	border-radius: 999px;
	color: #fff;
	font-size: 14px;
	font-weight: 700;
	transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.ph-column-sidebar__cta-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px -10px rgba(0,188,212,0.6); }

/* ============================================================
 * RELATED
 * ============================================================ */
.ph-column-related { padding: 80px 0 60px; background: var(--ph-col-bg); }
.ph-column-related__inner { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.ph-column-related__head { text-align: center; margin-bottom: 40px; }
.ph-column-related__label { font-family: var(--fn-display); font-size: 12px; font-weight: 700; letter-spacing: 0.1em; color: var(--brand); text-transform: uppercase; }
.ph-column-related__title { font-family: "Noto Sans JP", sans-serif; font-size: clamp(24px, 3vw, 32px); font-weight: 800; color: var(--ph-col-heading); margin-top: 8px; }
.ph-column-related__list {
	list-style: none; padding: 0; margin: 0;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 28px;
}
@media (max-width: 900px) {
	.ph-column-related__list { grid-template-columns: 1fr; gap: 20px; }
}
.ph-column-related__item { margin: 0; }

/* ============================================================
 * CARDS (shared - archive / related / top)
 * ============================================================ */
.ph-column-card {
	display: block;
	background: var(--ph-col-card);
	border-radius: var(--ph-col-radius);
	overflow: hidden;
	box-shadow: var(--ph-col-shadow);
	transition: transform .35s var(--ease), box-shadow .35s var(--ease);
	height: 100%;
	color: inherit;
	border: 1px solid var(--ph-col-border-soft);
}
.ph-column-card:hover { transform: translateY(-6px); box-shadow: var(--ph-col-shadow-hover); }
.ph-column-card__thumb {
	position: relative;
	aspect-ratio: 16/9;
	background: linear-gradient(135deg, #0b1d3a, #122a4f);
	overflow: hidden;
}
.ph-column-card__thumb img {
	width: 100%; height: 100%;
	object-fit: cover;
	transition: transform .6s var(--ease);
}
.ph-column-card:hover .ph-column-card__thumb img { transform: scale(1.06); }
.ph-column-card__thumb-fallback {
	width: 100%; height: 100%;
	display: flex; align-items: center; justify-content: center;
	font-family: var(--fn-display); font-weight: 900; font-size: 32px; letter-spacing: 0.08em;
	color: rgba(255,255,255,0.18);
}
.ph-column-card__cat {
	display: inline-block;
	padding: 4px 10px;
	border-radius: 4px;
	font-family: var(--fn-display);
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.05em;
	color: #fff;
	background: linear-gradient(135deg, var(--brand), var(--ph-col-accent-2));
	margin-bottom: 12px;
}
.ph-column-card__cat--overlay {
	position: absolute;
	top: 14px; left: 14px;
	z-index: 1;
	box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
.ph-column-card__body { padding: 24px 22px 22px; }
.ph-column-card__title {
	font-family: "Noto Sans JP", sans-serif;
	font-size: 17px;
	font-weight: 800;
	line-height: 1.5;
	color: var(--ph-col-heading);
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
	margin: 0 0 10px;
	transition: color .25s var(--ease);
}
.ph-column-card:hover .ph-column-card__title { color: var(--brand); }
.ph-column-card__excerpt {
	font-size: 13px;
	color: var(--ph-col-muted);
	line-height: 1.7;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
	margin: 0 0 14px;
}
.ph-column-card__meta {
	display: flex; gap: 14px;
	font-family: var(--fn-display);
	font-size: 12px;
	color: var(--ph-col-muted);
	letter-spacing: 0.04em;
}

/* ============================================================
 * POST NAV (prev/next)
 * ============================================================ */
.ph-column-nav { padding: 0 0 40px; background: var(--ph-col-bg); }
.ph-column-nav__inner {
	max-width: 1080px;
	margin: 0 auto;
	padding: 0 24px;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
}
@media (max-width: 700px) {
	.ph-column-nav__inner { grid-template-columns: 1fr; }
}
.ph-column-nav__item {
	display: flex; flex-direction: column; gap: 8px;
	padding: 22px 26px;
	background: var(--ph-col-card);
	border: 1px solid var(--ph-col-border-soft);
	border-radius: var(--ph-col-radius);
	transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.ph-column-nav__item:hover { border-color: var(--brand); transform: translateY(-2px); box-shadow: var(--ph-col-shadow-hover); }
.ph-column-nav__item--next { text-align: right; }
.ph-column-nav__label {
	display: inline-flex; align-items: center; gap: 6px;
	font-family: var(--fn-display);
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.1em;
	color: var(--brand);
	text-transform: uppercase;
}
.ph-column-nav__item--next .ph-column-nav__label { justify-content: flex-end; }
.ph-column-nav__title {
	font-size: 15px;
	font-weight: 700;
	color: var(--ph-col-heading);
	line-height: 1.55;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.ph-column-back { padding: 0 0 100px; background: var(--ph-col-bg); text-align: center; }
.ph-column-back__link {
	display: inline-flex; align-items: center; gap: 8px;
	padding: 14px 28px;
	border: 1px solid var(--ph-col-border);
	border-radius: 999px;
	font-size: 14px;
	font-weight: 600;
	color: var(--ph-col-body);
	background: var(--ph-col-card);
	transition: all .25s var(--ease);
}
.ph-column-back__link:hover { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ============================================================
 * ARCHIVE HERO
 * ============================================================ */
.ph-column-archive-hero {
	position: relative;
	padding: 180px 0 100px;
	background: linear-gradient(135deg, #061226 0%, #0b1d3a 50%, #122a4f 100%);
	color: #fff;
	overflow: hidden;
	text-align: center;
}
.ph-column-archive-hero__bg {
	position: absolute; inset: 0;
	background:
		radial-gradient(ellipse at 30% 20%, rgba(22,111,186,0.4), transparent 50%),
		radial-gradient(ellipse at 70% 80%, rgba(0,188,212,0.25), transparent 50%);
}
.ph-column-archive-hero__bg-text {
	position: absolute;
	font-family: var(--fn-display);
	font-size: clamp(180px, 30vw, 460px);
	font-weight: 900;
	color: rgba(255,255,255,0.04);
	letter-spacing: -0.05em;
	bottom: -60px;
	left: 50%;
	transform: translateX(-50%);
	line-height: 1;
	pointer-events: none;
	user-select: none;
	white-space: nowrap;
}
.ph-column-archive-hero #particles-archive { position: absolute; inset: 0; width: 100%; height: 100%; }
.ph-column-archive-hero__inner { position: relative; max-width: 900px; margin: 0 auto; padding: 0 24px; }
.ph-column-archive-hero__crumb { margin-bottom: 28px; justify-content: center; }
.ph-column-archive-hero__crumb .ph-breadcrumb__list { justify-content: center; }
.ph-column-archive-hero__label {
	display: inline-flex; align-items: center; gap: 10px;
	font-family: var(--fn-display);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--ph-col-accent-2);
}
.ph-column-archive-hero__label::before { content: ""; width: 24px; height: 1.5px; background: currentColor; }
.ph-column-archive-hero__title {
	font-family: "Noto Sans JP", sans-serif;
	font-weight: 800;
	font-size: clamp(36px, 5vw, 56px);
	line-height: 1.3;
	margin-top: 14px;
	letter-spacing: 0.02em;
}
.ph-column-archive-hero__desc { margin-top: 20px; font-size: 15px; line-height: 1.9; color: rgba(255,255,255,0.75); }

/* ============================================================
 * CATEGORY FILTER
 * ============================================================ */
.ph-column-filter {
	background: var(--ph-col-bg);
	padding: 28px 0 0;
	border-bottom: 1px solid var(--ph-col-border-soft);
}
.ph-column-filter__inner {
	max-width: 1240px;
	margin: 0 auto;
	padding: 0 24px 24px;
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	overflow-x: auto;
}
.ph-column-filter__chip {
	display: inline-flex; align-items: center; gap: 6px;
	padding: 8px 16px;
	border-radius: 999px;
	border: 1px solid var(--ph-col-border);
	background: #fff;
	font-size: 13px;
	font-weight: 600;
	color: var(--ph-col-body);
	white-space: nowrap;
	transition: all .25s var(--ease);
}
.ph-column-filter__chip:hover { border-color: var(--brand); color: var(--brand); }
.ph-column-filter__chip.is-active {
	background: linear-gradient(135deg, var(--brand), var(--ph-col-accent-2));
	border-color: transparent;
	color: #fff;
}
.ph-column-filter__chip small { font-family: var(--fn-display); font-size: 11px; opacity: 0.7; }

/* ============================================================
 * LIST GRID (archive)
 * ============================================================ */
.ph-column-list-wrap { background: var(--ph-col-bg); padding: 56px 0 100px; }
.ph-column-list-wrap__inner { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.ph-column-grid {
	list-style: none;
	padding: 0;
	margin: 0;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 32px;
}
@media (max-width: 1024px) {
	.ph-column-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (max-width: 640px) {
	.ph-column-grid { grid-template-columns: 1fr; gap: 20px; }
}
.ph-column-grid__item { margin: 0; }

/* ============================================================
 * PAGINATION
 * ============================================================ */
.ph-column-pagination { margin-top: 60px; }
.ph-column-pagination__list {
	display: flex; justify-content: center; flex-wrap: wrap;
	gap: 8px;
	list-style: none;
	padding: 0;
}
.ph-column-pagination__item { margin: 0; }
.ph-column-pagination__item .page-numbers,
.ph-column-pagination__item a,
.ph-column-pagination__item span {
	display: inline-flex; align-items: center; justify-content: center;
	min-width: 42px; height: 42px;
	padding: 0 14px;
	border-radius: 10px;
	border: 1px solid var(--ph-col-border);
	background: #fff;
	color: var(--ph-col-body);
	font-family: var(--fn-display);
	font-size: 14px;
	font-weight: 700;
	transition: all .25s var(--ease);
}
.ph-column-pagination__item a:hover {
	border-color: var(--brand);
	color: var(--brand);
}
.ph-column-pagination__item .current,
.ph-column-pagination__item span.current {
	background: linear-gradient(135deg, var(--brand), var(--ph-col-accent-2));
	color: #fff;
	border-color: transparent;
}
.ph-column-pagination__item .dots { border: 0; background: transparent; }

/* ============================================================
 * EMPTY
 * ============================================================ */
.ph-column-empty { text-align: center; padding: 60px 20px; }
.ph-column-empty__icon { color: var(--ph-col-muted); margin-bottom: 18px; }
.ph-column-empty__title { font-size: 22px; font-weight: 800; color: var(--ph-col-heading); margin-bottom: 8px; }
.ph-column-empty__desc { color: var(--ph-col-muted); margin-bottom: 28px; }
.ph-column-empty__btn {
	display: inline-flex; align-items: center; gap: 8px;
	padding: 14px 28px;
	background: var(--brand);
	color: #fff;
	border-radius: 999px;
	font-weight: 700;
	transition: transform .25s var(--ease);
}
.ph-column-empty__btn:hover { transform: translateY(-2px); }

/* ============================================================
 * TOP PAGE COLUMN SECTION
 * ============================================================ */
.ph-top-column {
	position: relative;
	padding: 110px 0 100px;
	background: #f8fafc;
	overflow: hidden;
}
.ph-top-column__bg-text {
	position: absolute;
	font-family: var(--fn-display);
	font-size: clamp(140px, 22vw, 320px);
	font-weight: 900;
	color: rgba(11,29,58,0.04);
	letter-spacing: -0.04em;
	top: 20px;
	right: -30px;
	line-height: 1;
	pointer-events: none;
	user-select: none;
}
.ph-top-column__inner { position: relative; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.ph-top-column__head {
	display: flex; justify-content: space-between; align-items: flex-end;
	flex-wrap: wrap;
	gap: 24px;
	margin-bottom: 56px;
}
.ph-top-column__label {
	font-family: var(--fn-display);
	display: inline-flex; align-items: center; gap: 12px;
	font-size: 14px;
	font-weight: 700;
	color: var(--brand);
	letter-spacing: 0.06em;
}
.ph-top-column__label::before { content: ""; width: 24px; height: 1.5px; background: currentColor; }
.ph-top-column__title {
	font-family: "Noto Sans JP", sans-serif;
	font-weight: 800;
	font-size: clamp(28px, 4vw, 44px);
	color: var(--ph-col-heading);
	margin-top: 12px;
}
.ph-top-column__sub { color: var(--gray); font-size: 15px; margin-top: 8px; max-width: 600px; }

.ph-top-column__grid {
	list-style: none; padding: 0; margin: 0;
	display: grid;
	grid-template-columns: repeat(2, 1fr) repeat(2, 1fr);
	grid-template-areas:
		"feat feat sub1 sub2"
		"feat feat sub3 sub3";
	gap: 24px;
}
.ph-top-column__item { margin: 0; }
.ph-top-column__item--feature { grid-area: feat; }
.ph-top-column__item:nth-child(2) { grid-area: sub1; }
.ph-top-column__item:nth-child(3) { grid-area: sub2; }
.ph-top-column__item:nth-child(4) { grid-area: sub3; }

@media (max-width: 1024px) {
	.ph-top-column__grid {
		grid-template-columns: 1fr 1fr;
		grid-template-areas:
			"feat feat"
			"sub1 sub2"
			"sub3 sub3";
	}
}
@media (max-width: 640px) {
	.ph-top-column__grid {
		grid-template-columns: 1fr;
		grid-template-areas:
			"feat"
			"sub1"
			"sub2"
			"sub3";
	}
}

.ph-column-card--feature .ph-column-card__title { font-size: clamp(20px, 2.4vw, 26px); -webkit-line-clamp: 3; }
.ph-column-card--feature .ph-column-card__body { padding: 28px clamp(24px, 3vw, 36px); }

/* ============================================================
 * TOC ACTIVE INDICATOR (animated)
 * ============================================================ */
.ph-toc__link {
	position: relative;
}
.ph-toc__link.is-active::before {
	content: "";
	position: absolute;
	left: -16px; top: 50%;
	transform: translateY(-50%);
	width: 4px; height: 16px;
	border-radius: 2px;
	background: linear-gradient(180deg, var(--brand), var(--ph-col-accent-2));
}

/* ============================================================
 * REDUCED MOTION
 * ============================================================ */
@media (prefers-reduced-motion: reduce) {
	.ph-column-card,
	.ph-column-card__thumb img,
	.ph-column-card__title,
	.ph-column-share__btn,
	.ph-column-nav__item,
	.ph-column-sidebar__cta-btn,
	.ph-column-back__link,
	.ph-column-empty__btn { transition: none !important; }
}