/* ── Design tokens & reset ──────────────────────────────────── */

:root {
  --color-accent:       #0069d8;
  --color-accent-dark:  #0054ad;
  --color-bg:           #f7fbff;
  --color-bg-secondary: #eef7ff;
  --color-bg-white:     #ffffff;
  --color-text:         #0f315f;
  --color-text-sub:     #36506f;
  --color-text-muted:   #94a3b8;
  --color-border:       #d5e5f6;
  --color-border-light: #e6f0fb;
  --color-brand-dark:   #072861;
  --color-success:      #16a34a;
  --color-warning:      #d97706;
  --color-error:        #dc2626;
  --font-body:    'LINE Seed JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  --font-heading: 'LINE Seed JP', 'Hiragino Sans', sans-serif;
  --font-mono:    'SFMono-Regular', 'Consolas', 'Menlo', monospace;
  --transition:   0.3s cubic-bezier(0.4, 0.4, 0, 1);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

/* ── フォントメトリクス補正（CLS軽減） ───────────────────────── */
@font-face {
  font-family: 'LINE Seed JP Fallback';
  src: local('Hiragino Sans'), local('Yu Gothic Medium'), local('Meiryo'), local('Arial');
  ascent-override: 88%; descent-override: 22%; line-gap-override: 0%; size-adjust: 105%;
}

body {
  margin: 0;
  padding: 0;
  background: #f5f9ff;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--color-text);
  line-height: 1.7;
  letter-spacing: 0;
  overflow-wrap: break-word;
  line-break: strict;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  transform: translateY(-160%);
  padding: 0.55rem 0.9rem;
  border-radius: 4px;
  color: #fff;
  background: var(--color-brand-dark);
  font-size: 0.8125rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.16);
}

.skip-link:focus {
  transform: translateY(0);
  outline: 3px solid #bfdbfe;
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid #bfdbfe;
  outline-offset: 3px;
}

/* ── Article layout ─────────────────────────────────────────── */
.article-container {
  width: min(1200px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 30px 40px 44px;
}

.article-container.article-index-home,
.article-container.article-index-filtered {
  width: 100%;
  max-width: none;
  padding: 0;
}

.article-index-title {
  margin: 0;
  color: var(--color-brand-dark);
  font-size: clamp(36px, 4vw, 50px);
  line-height: 1.35;
  font-weight: 900;
  text-wrap: balance;
}

.article-index-lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--color-text-sub);
  font-size: 16px;
  line-height: 1.85;
}

.article-index-hero {
  margin: 0 0 52px;
  padding: 0;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, #f5f8fa 0%, #fff 68%);
}

.article-index-hero-inner,
.article-index-content {
  width: min(1200px, calc(100vw - 48px));
  margin: 0 auto;
}

.article-index-hero-inner {
  width: min(1200px, calc(100% - 64px));
  padding: 34px 0 64px;
}

.article-index-content {
  padding-right: 40px;
  padding-bottom: 44px;
  padding-left: 40px;
}

.article-index-hero .breadcrumb {
  width: 100%;
  margin: 0 0 52px;
  padding: 0;
}

.article-index-eyebrow,
.article-section-heading > p,
.article-featured-heading > p {
  margin: 0 0 6px;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.article-index-home .article-index-title {
  margin-bottom: 0;
  font-size: clamp(36px, 4vw, 50px);
}

.article-index-eyebrow {
  margin-bottom: 10px;
  color: #2d6cdf;
  font-size: 14px;
}

.article-index-home .article-index-title span {
  display: inline-block;
}

.article-section-heading,
.article-featured-heading {
  margin-bottom: 24px;
}

.article-section-heading h2,
.article-featured-heading h2 {
  margin: 0;
  color: var(--color-brand-dark);
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.45;
  font-weight: 900;
  text-wrap: balance;
}

.article-featured {
  margin-bottom: 72px;
}

.article-featured-card {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(0, 1.25fr);
  min-height: 330px;
  overflow: hidden;
  border: 1px solid #cbdced;
  border-radius: 10px;
  color: var(--color-text);
  background: #fff;
  text-decoration: none;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.article-featured-card:hover,
.article-featured-card:focus-visible {
  border-color: #8cb6df;
  box-shadow: 0 16px 30px rgba(8, 45, 102, 0.08);
  transform: translateY(-2px);
}

.article-featured-media {
  min-height: 330px;
  overflow: hidden;
  background: #eef5fa;
}

.article-featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-featured-body {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 38px 42px;
}

.article-featured-label {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 900;
}

.article-featured-card strong {
  max-width: 760px;
  color: var(--color-brand-dark);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.45;
  word-break: auto-phrase;
  text-wrap: balance;
}

.article-featured-desc {
  max-width: 760px;
  margin-top: 18px;
  color: var(--color-text-sub);
  font-size: 15px;
  line-height: 1.8;
}

.article-featured-meta {
  margin-top: 28px;
  color: var(--color-accent-dark);
  font-size: 13px;
  font-weight: 900;
}

.article-purpose,
.article-topics,
.article-latest {
  margin-bottom: 72px;
}

.article-purpose-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.article-purpose-grid a {
  display: grid;
  min-height: 180px;
  align-content: start;
  padding: 28px 30px;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
}

.article-purpose-grid a:nth-child(even) {
  border-right: 0;
}

.article-purpose-grid a:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.article-purpose-grid span {
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 900;
}

.article-purpose-grid strong {
  margin-top: 12px;
  color: var(--color-brand-dark);
  font-size: 20px;
}

.article-purpose-grid small {
  margin-top: 10px;
  color: var(--color-text-sub);
  font-size: 14px;
  line-height: 1.75;
}

.article-purpose-grid b {
  margin-top: 18px;
  color: var(--color-accent-dark);
  font-size: 12px;
}

.article-topic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.article-topic-grid a {
  display: flex;
  min-height: 150px;
  flex-direction: column;
  padding: 24px;
  border-right: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
}

.article-topic-grid a:last-child {
  border-right: 0;
}

.article-topic-grid strong {
  color: var(--color-brand-dark);
  font-size: 17px;
}

.article-topic-grid span {
  margin-top: 8px;
  color: var(--color-text-sub);
  font-size: 13px;
  line-height: 1.65;
}

.article-topic-grid small {
  margin-top: auto;
  padding-top: 18px;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 900;
}

.category-hub {
  margin: 0 0 1.5rem;
  padding: 24px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: transparent;
}

.category-hub-heading {
  margin-bottom: 1rem;
}

.category-hub-label {
  margin: 0 0 0.2rem;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 900;
}

.category-hub h2 {
  margin: 0;
  color: var(--color-brand-dark);
  font-size: 1.125rem;
  line-height: 1.45;
}

.category-hub-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.category-hub-card {
  display: grid;
  gap: 0.35rem;
  min-height: 132px;
  padding: 18px 16px;
  border-right: 1px solid var(--color-border-light);
  color: var(--color-text);
  background: transparent;
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
}

.category-hub-card:hover {
  background: #f8fbff;
}

.category-hub-card.is-active {
  box-shadow: inset 0 3px 0 var(--color-accent);
  background: #f8fbff;
}

.category-hub-card:last-child {
  border-right: 0;
}

.category-hub-card-title {
  color: var(--color-brand-dark);
  font-weight: 900;
}

.category-hub-card-desc {
  color: var(--color-text-sub);
  font-size: 0.8125rem;
  line-height: 1.65;
}

.category-hub-card-count {
  align-self: end;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 900;
}

/* ── Article header ─────────────────────────────────────────── */
.article-header {
  max-width: 820px;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.article-title {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--color-brand-dark);
  margin: 0 0 0.75rem;
  word-break: auto-phrase;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-text-sub);
}
.article-meta time { font-variant-numeric: tabular-nums; }
.article-reading-time-sep { color: var(--color-text-muted); }
.article-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-left: auto; }
.article-tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  background: var(--color-bg-secondary);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--color-text-sub);
  text-decoration: none;
}
.article-tag--cat {
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  color: var(--color-accent);
  font-weight: 700;
  transition: background 0.2s;
}
.article-tag--cat:hover {
  background: color-mix(in srgb, var(--color-accent) 20%, transparent);
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  width: auto;
  max-width: none;
  margin-left: 0;
  margin-right: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--color-accent); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--color-border); }

/* ── Article circulation layout ────────────────────────────── */
.article-content-layout,
.article-primary { min-width: 0; }

.article-sidebar { display: none; }

.article-sidebar-panel {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-white);
}

.article-sidebar-section {
  padding: 20px;
  border-bottom: 1px solid var(--color-border-light);
}

.article-sidebar-section:last-child { border-bottom: 0; }

.article-sidebar-section h2 {
  margin: 0 0 12px;
  color: var(--color-brand-dark);
  font-size: 15px;
  line-height: 1.5;
  font-weight: 900;
}

.article-sidebar-section p {
  margin: 0 0 14px;
  color: var(--color-text-sub);
  font-size: 12.5px;
  line-height: 1.7;
}

.article-sidebar-link-list,
.article-sidebar-article-list,
.article-sidebar-browse {
  display: grid;
}

.article-sidebar-link-list a {
  display: grid;
  gap: 2px;
  padding: 11px 0;
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text);
  text-decoration: none;
}

.article-sidebar-link-list a:first-child { border-top: 0; padding-top: 0; }
.article-sidebar-link-list a:last-child { padding-bottom: 0; }
.article-sidebar-link-list strong { color: var(--color-brand-dark); font-size: 13px; line-height: 1.55; }
.article-sidebar-link-list span { color: var(--color-text-sub); font-size: 11.5px; line-height: 1.55; }
.article-sidebar-link-list a:hover strong,
.article-sidebar-link-list a:focus-visible strong { color: var(--color-accent); }

.article-sidebar-primary-link {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  color: #fff;
  background: var(--color-accent);
  font-size: 12.5px;
  font-weight: 900;
  text-decoration: none;
}

.article-sidebar-primary-link:hover,
.article-sidebar-primary-link:focus-visible { background: var(--color-accent-dark); }

.article-sidebar-article-list a,
.article-sidebar-browse > a {
  padding: 8px 0;
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text);
  font-size: 12px;
  line-height: 1.6;
  text-decoration: none;
}

.article-sidebar-article-list a:first-child,
.article-sidebar-browse > a:first-of-type { border-top: 0; padding-top: 0; }
.article-sidebar-article-list a:last-child,
.article-sidebar-browse > a:last-child { padding-bottom: 0; }
.article-sidebar-article-list a:hover,
.article-sidebar-browse > a:hover { color: var(--color-accent); }

@media (min-width: 1180px) {
  .article-content-layout {
    display: grid;
    grid-template-columns: minmax(0, 820px) minmax(220px, 1fr);
    gap: 36px;
    align-items: start;
  }

  .article-primary > .article-header,
  .article-primary > .article-body,
  .article-primary > .article-nav { max-width: none; }

  .article-sidebar {
    display: block;
    position: sticky;
    top: 92px;
    max-height: calc(100vh - 112px);
    max-height: calc(100dvh - 112px);
    overflow-y: auto;
    overscroll-behavior-y: contain;
    scrollbar-gutter: stable;
  }

  .related-tools { display: none; }
}

/* ── Table of contents ──────────────────────────────────────── */
.toc {
  background: var(--color-bg-secondary);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.875rem;
}
.toc-title {
  font-weight: 700;
  margin: 0 0 0.5rem;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0;
  color: var(--color-text-sub);
}
.toc ol, .toc ul { margin: 0; padding-left: 1.25rem; }
.toc li { margin: 0.25rem 0; }
.toc a { color: var(--color-text); text-decoration: none; }
.toc a:hover { color: var(--color-accent); }
.toc .toc-h3 { font-size: 0.8125rem; color: var(--color-text-sub); margin-left: 1.25em; }

/* ── Article body ───────────────────────────────────────────── */
.article-body {
  max-width: 820px;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.article-body h2 {
  font-size: 26px;
  font-weight: 900;
  margin: 2.25rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-brand-dark);
}
.article-body h3 {
  font-size: 20px;
  font-weight: 900;
  margin: 1.75rem 0 0.5rem;
  color: var(--color-brand-dark);
}
.article-body h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 1.5rem 0 0.4rem;
}
.article-body p    { margin: 0 0 1rem; }
.article-body ul, .article-body ol { margin: 0 0 1rem; padding-left: 1.5rem; }
.article-body li   { margin: 0.3rem 0; }
.article-body li ul, .article-body li ol { margin-bottom: 0; }
.article-body blockquote {
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--color-accent);
  background: var(--color-bg-secondary);
  border-radius: 0 8px 8px 0;
  color: var(--color-text-sub);
  font-style: italic;
}
.article-body hr { border: none; border-top: 1px solid var(--color-border); margin: 2rem 0; }
.article-body img { max-width: 100%; height: auto; border-radius: 8px; margin: 0.5rem 0; }
.article-body a { color: var(--color-accent); }
.article-body a:hover { text-decoration: underline; }
.article-body strong { font-weight: 700; color: var(--color-brand-dark); }

/* ── Code ───────────────────────────────────────────────────── */
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-secondary);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--color-border-light);
}
.article-body pre {
  background: #0f172a;
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  margin: 1rem 0;
  line-height: 1.6;
}
.article-body pre code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: none;
  border: none;
  padding: 0;
  color: #e2e8f0;
}

/* ── Table ──────────────────────────────────────────────────── */
.article-body .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 1rem 0; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
.article-body th {
  background: var(--color-bg-secondary);
  font-weight: 700;
  text-align: left;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--color-border);
}
.article-body td { padding: 0.5rem 0.75rem; border: 1px solid var(--color-border-light); vertical-align: top; }

/* ── Related links ──────────────────────────────────────────── */
.related-tools {
  max-width: 820px;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}
.related-tools-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
  color: var(--color-text-sub);
  margin: 0 0 0.75rem;
}
.related-tools-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.related-tool-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.8125rem;
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition);
}
.related-tool-link:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ── Prev/next nav ──────────────────────────────────────────── */
.article-nav {
  max-width: 820px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}
.article-nav a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color var(--transition);
}
.article-nav a:hover { border-color: var(--color-accent); }
.article-nav-label { font-size: 0.75rem; color: var(--color-text-muted); }
.article-nav-title { font-size: 0.875rem; color: var(--color-text); font-weight: 400; }
.article-nav .next { text-align: right; }
.article-nav .prev:empty, .article-nav .next:empty { visibility: hidden; }

/* ── Article list ───────────────────────────────────────────── */
.article-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}
.article-card {
  display: flex;
  flex-direction: column;
  min-height: 230px;
  padding: 1.45rem 1.55rem 1.35rem;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(8, 45, 102, 0.045);
  transition: border-color var(--transition), box-shadow var(--transition), color var(--transition);
}
.article-card:hover,
.article-card:focus-visible {
  border-color: #9fc4ee;
  box-shadow: 0 12px 26px rgba(8, 45, 102, 0.085);
}
.article-card:hover .article-card-title,
.article-card:focus-visible .article-card-title { color: var(--color-accent); }
.article-card-title {
  font-size: 19px;
  font-weight: 900;
  color: var(--color-brand-dark);
  margin: 0 0 0.7rem;
  line-height: 1.5;
}
.article-card-desc {
  font-size: 14.5px;
  color: var(--color-text-sub);
  margin: 0 0 1rem;
  line-height: 1.72;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card-meta {
  margin-top: auto;
  padding-top: 0.9rem;
  border-top: 1px solid var(--color-border-light);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* ── Category filter ────────────────────────────────────────── */
.tag-filter { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
.tag-filter-item {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--color-text-sub);
  text-decoration: none;
  background: var(--color-bg-white);
  min-height: 32px;
  line-height: 1.6;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.tag-filter-item:not(.is-active):hover { border-color: var(--color-accent); color: var(--color-accent); }
.tag-filter-item.is-active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.tag-filter-note { font-size: 0.875rem; color: var(--color-text-sub); margin: 0 0 1rem; }
.tag-filter-note a { color: var(--color-accent); text-decoration: none; }
.tag-filter-note a:hover { text-decoration: underline; }
.tag-filter-reset {
  margin-left: 0.5em;
  font-size: 0.8em;
}
.article-empty-message {
  color: var(--color-text-sub);
}

/* ── Pagination ─────────────────────────────────────────────── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 1.6rem;
  flex-wrap: nowrap;
}
.pagination-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid #d9dde4;
  border-radius: 10px;
  color: var(--color-brand-dark);
  background: #fff;
  font-size: 28px;
  line-height: 1;
  text-decoration: none;
  font-weight: 800;
}

.pagination-arrow:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.pagination-arrow.is-disabled {
  color: #c8cdd5;
  background: #fff;
  pointer-events: none;
}

.pagination-form {
  display: inline-flex;
  align-items: center;
  padding: 0;
  border: 0;
  background: transparent;
}

.pagination-select-wrap {
  position: relative;
  display: inline-flex;
}

.pagination-select-wrap::after {
  content: "⌄";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-56%);
  color: #75808f;
  font-size: 18px;
  line-height: 1;
  pointer-events: none;
}

.pagination-form select {
  width: 106px;
  height: 40px;
  padding: 0 36px 0 18px;
  color: #0c1424;
  border: 1px solid #d9dde4;
  border-radius: 10px;
  background: #fff;
  font: inherit;
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
  appearance: none;
  cursor: pointer;
}

.article-not-found {
  min-height: 360px;
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 12px;
}

.article-not-found h1 {
  margin: 0;
  color: var(--color-brand-dark);
  font-size: 42px;
  line-height: 1;
  font-weight: 900;
}

.article-not-found p {
  margin: 0 0 10px;
  color: var(--color-text-sub);
  font-size: 14px;
  font-weight: 700;
}
/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 600px) {
  .article-container {
    width: min(100% - 44px, 1200px);
    padding: 24px 18px 34px;
  }
  .article-container.article-index-home,
  .article-container.article-index-filtered { width: 100%; padding: 0; }
  .article-index-hero-inner,
  .article-index-content {
    width: min(100% - 44px, 1200px);
    padding-right: 18px;
    padding-left: 18px;
  }
  .article-index-hero-inner {
    width: calc(100% - 48px);
    padding: 34px 0 48px;
  }
  .article-index-content { padding-bottom: 34px; }
  .article-title { font-size: 24px; }
  .article-index-title { font-size: 30px; }
  .article-index-hero { margin-bottom: 38px; }
  .article-index-hero .breadcrumb { margin-bottom: 38px; }
  .article-index-lead { font-size: 15px; line-height: 1.78; }
  .article-featured { margin-bottom: 54px; }
  .article-featured-card { width: 100%; min-width: 0; grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .article-featured-card > * { min-width: 0; max-width: 100%; }
  .article-featured-media { min-height: 190px; aspect-ratio: 16 / 9; }
  .article-featured-media img { max-width: 100%; }
  .article-featured-body { width: 100%; overflow: hidden; box-sizing: border-box; padding: 26px 22px 28px; }
  .article-featured-body strong,
  .article-featured-desc { overflow-wrap: anywhere; }
  .article-featured-card strong { font-size: 24px; }
  .article-featured-desc { font-size: 14px; }
  .article-purpose,
  .article-topics,
  .article-latest { margin-bottom: 54px; }
  .article-purpose-grid,
  .article-topic-grid { grid-template-columns: 1fr; }
  .article-purpose-grid a,
  .article-topic-grid a { min-height: 0; border-right: 0; border-bottom: 1px solid var(--color-border); }
  .article-purpose-grid a:nth-last-child(-n + 2),
  .article-purpose-grid a:last-child,
  .article-topic-grid a:last-child { border-bottom: 0; }
  .article-purpose-grid a:nth-last-child(2) { border-bottom: 1px solid var(--color-border); }
  .article-purpose-grid strong { margin-top: 10px; }
  .article-topic-grid small { margin-top: 14px; }
  .category-hub { padding: 18px 0; }
  .category-hub-grid {
    grid-template-columns: 1fr;
  }
  .category-hub-card {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--color-border-light);
  }
  .category-hub-card:last-child {
    border-bottom: 0;
  }
  .article-list { grid-template-columns: 1fr; }
  .article-card {
    min-height: 0;
    padding: 1.15rem 1.05rem;
  }
  .pagination {
    gap: 9px;
  }
  .pagination-arrow { width: 38px; height: 38px; border-radius: 10px; font-size: 26px; }
  .pagination-form select { width: 100px; height: 38px; border-radius: 10px; font-size: 17px; padding-left: 16px; padding-right: 34px; }
  .pagination-select-wrap::after { right: 13px; font-size: 17px; }
  .article-tags { margin-left: 0; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav .next { text-align: left; }
}