/* ── Page Hero ── */
    .insights-hero {
      background: var(--color-navy-950);
      padding: calc(72px + var(--space-20)) 0 var(--space-20);
      position: relative; overflow: hidden;
    }
    .insights-hero__grid {
      position: absolute; inset: 0;
      background-image:
        linear-gradient(rgba(255,203,5,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,203,5,0.035) 1px, transparent 1px);
      background-size: 50px 50px;
    }
    .insights-hero__glow {
      position: absolute; width: 600px; height: 600px; border-radius: 50%;
      background: radial-gradient(circle, rgba(0,102,204,0.18) 0%, transparent 70%);
      top: -150px; right: -100px; pointer-events: none;
    }
    .insights-hero__inner {
      position: relative; z-index: 2;
      display: grid; grid-template-columns: 1fr auto;
      align-items: flex-end; gap: var(--space-10);
    }
    .insights-hero__title {
      font-family: var(--font-display); font-weight: 900;
      font-size: clamp(var(--text-4xl), 6vw, var(--text-7xl));
      color: var(--color-white); line-height: 1.05; letter-spacing: -0.03em;
      margin-bottom: var(--space-4);
    }
    .insights-hero__sub {
      font-size: var(--text-lg); color: rgba(255,255,255,0.5);
      line-height: 1.7; max-width: 480px;
    }

    /* Newsletter signup */
    .newsletter-box {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-xl); padding: var(--space-6);
      min-width: 320px;
    }
    .newsletter-box__label {
      font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.1em;
      text-transform: uppercase; color: var(--color-gold-400); margin-bottom: var(--space-2);
    }
    .newsletter-box__title {
      font-family: var(--font-display); font-size: var(--text-base);
      font-weight: 700; color: var(--color-white); margin-bottom: var(--space-4);
    }
    .newsletter-form { display: flex; flex-direction: column; gap: var(--space-3); }
    .newsletter-form input {
      width: 100%; padding: var(--space-3) var(--space-4);
      background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-md); font-family: var(--font-body); font-size: var(--text-sm);
      color: var(--color-white); transition: border-color 200ms;
    }
    .newsletter-form input::placeholder { color: rgba(255,255,255,0.3); }
    .newsletter-form input:focus { outline: none; border-color: var(--color-gold-400); }
    .newsletter-form .btn { width: 100%; justify-content: center; }
    .newsletter-form__feedback {
      font-size: var(--text-sm); line-height: 1.5; padding: var(--space-3);
      border-radius: var(--radius-md); margin-bottom: var(--space-2);
    }
    .newsletter-form__feedback--ok {
      background: rgba(34, 197, 94, 0.12); color: #86efac;
      border: 1px solid rgba(34, 197, 94, 0.28);
    }
    .newsletter-form__feedback--err {
      background: rgba(239, 68, 68, 0.1); color: #fecaca;
      border: 1px solid rgba(239, 68, 68, 0.25);
    }
    .newsletter-form__hp {
      position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
      overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
    }

    /* ── Filter bar ── */
    .filter-bar {
      background: var(--color-white);
      border-bottom: 1px solid var(--color-gray-200);
      position: sticky; top: 72px; z-index: 10;
    }
    .filter-bar__inner {
      display: flex; align-items: center; gap: var(--space-4);
      padding: var(--space-4) 0; overflow-x: auto;
      scrollbar-width: none;
    }
    .filter-bar__inner::-webkit-scrollbar { display: none; }
    .filter-btn {
      flex-shrink: 0; padding: var(--space-2) var(--space-4);
      border-radius: var(--radius-full); font-size: var(--text-sm);
      font-weight: 600; cursor: pointer; border: none;
      transition: all var(--transition-base);
    }
    .filter-btn--active {
      background: var(--color-navy-900); color: var(--color-white);
    }
    .filter-btn--inactive {
      background: var(--color-gray-100); color: var(--color-gray-600);
    }
    .filter-btn--inactive:hover {
      background: var(--color-gray-200); color: var(--color-gray-800);
    }
    .filter-bar__search {
      margin-left: auto; flex-shrink: 0;
      display: flex; align-items: center; gap: var(--space-2);
      background: var(--color-gray-100); border: 1px solid var(--color-gray-200);
      border-radius: var(--radius-full); padding: var(--space-2) var(--space-4);
      cursor: text; transition: border-color var(--transition-base), background var(--transition-base);
    }
    .filter-bar__search:focus-within {
      border-color: var(--color-navy-900); background: var(--color-white);
    }
    .filter-bar__search svg { color: var(--color-gray-400); flex-shrink: 0; }
    .filter-bar__search input {
      border: none; background: transparent; outline: none;
      font-family: var(--font-body); font-size: var(--text-sm);
      color: var(--color-gray-800); width: 160px;
    }
    .filter-bar__search input::placeholder { color: var(--color-gray-400); }
    .filter-bar__search input::-webkit-search-cancel-button { cursor: pointer; }
    .search-empty {
      text-align: center; padding: var(--space-20) 0; display: none;
    }
    .search-empty__title {
      font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800;
      color: var(--color-navy-900); margin-bottom: var(--space-2);
    }
    .search-empty__sub { font-size: var(--text-sm); color: var(--color-gray-500); }

    /* ── Featured post ── */
    .featured-section {
      padding: var(--space-24) 0;
      background: var(--color-white);
    }
    .featured-post {
      display: block;
      border-radius: var(--radius-xl); overflow: hidden;
      border: 1px solid var(--color-gray-200);
      transition: all var(--transition-smooth);
    }
    .featured-post:hover {
      box-shadow: 0 20px 60px rgba(0,0,0,0.10);
      transform: translateY(-3px); border-color: transparent;
    }
    .featured-post__visual {
      background: linear-gradient(135deg, var(--color-navy-950), var(--color-navy-700));
      min-height: 400px; display: flex; align-items: center; justify-content: center;
      position: relative; overflow: hidden;
    }
    .featured-post__visual-emoji { font-size: 96px; position: relative; z-index: 2; }
    .featured-post__visual-glow {
      position: absolute; width: 300px; height: 300px; border-radius: 50%;
      background: radial-gradient(circle, rgba(255,203,5,0.2) 0%, transparent 70%);
      pointer-events: none;
    }
    .featured-post__visual-cat {
      position: absolute; top: var(--space-5); left: var(--space-5);
      background: rgba(255,203,5,0.15); border: 1px solid rgba(255,203,5,0.25);
      border-radius: var(--radius-full); padding: 4px 12px;
      font-size: 11px; font-weight: 700; letter-spacing: 0.08em;
      text-transform: uppercase; color: var(--color-gold-400);
    }
    .featured-post__body {
      padding: var(--space-10); display: flex; flex-direction: column;
      justify-content: center;
    }
    .featured-post__label {
      font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.1em;
      text-transform: uppercase; color: var(--color-gold-400); margin-bottom: var(--space-3);
    }
    .featured-post__title {
      font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 800;
      color: var(--color-navy-900); line-height: 1.3; margin-bottom: var(--space-4);
      transition: color var(--transition-base);
    }
    .featured-post:hover .featured-post__title { color: var(--color-blue-500); }
    .featured-post__excerpt {
      font-size: var(--text-base); color: var(--color-gray-500); line-height: 1.75;
      margin-bottom: var(--space-6);
    }
    .featured-post__meta {
      display: flex; align-items: center; gap: var(--space-4);
      font-size: var(--text-sm); color: var(--color-gray-400);
    }
    .featured-post__meta-dot { color: var(--color-gray-300); }
    .featured-post__read-link {
      display: inline-flex; align-items: center; gap: var(--space-2);
      font-size: var(--text-sm); font-weight: 600; color: var(--color-blue-500);
      transition: gap var(--transition-base);
    }
    .featured-post__read-link:hover { gap: var(--space-3); }

    /* ── Articles grid ── */
    .articles-section {
      padding: var(--space-24) 0;
      background: var(--color-gray-50);
    }
    .articles-grid {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: var(--space-6);
    }
    .article-card {
      background: var(--color-white); border-radius: var(--radius-lg);
      overflow: hidden; border: 1px solid var(--color-gray-200);
      transition: all var(--transition-smooth); display: flex; flex-direction: column;
    }
    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 50px rgba(0,0,0,0.08);
      border-color: transparent;
    }
    .article-card__thumb {
      height: 160px; position: relative; overflow: hidden;
    }
    .article-card__thumb-bg {
      width: 100%; height: 100%; display: flex;
      align-items: center; justify-content: center; font-size: 48px;
    }
    .bg-1 { background: linear-gradient(135deg, #040D1E, #0B3A6B); }
    .bg-2 { background: linear-gradient(135deg, #071530, #102660); }
    .bg-3 { background: linear-gradient(135deg, #0B1F48, #0066CC); }
    .bg-4 { background: linear-gradient(135deg, #102660, #0080FF); }
    .bg-5 { background: linear-gradient(135deg, #040D1E, #0B1F48); }
    .bg-6 { background: linear-gradient(135deg, #071530, #0B3A6B); }

    .article-card__cat {
      background: rgba(255,203,5,0.15); border: 1px solid rgba(255,203,5,0.3);
      border-radius: var(--radius-full); padding: 2px 10px;
      font-size: 11px; font-weight: 700; letter-spacing: 0.08em;
      text-transform: uppercase; color: var(--color-gold-400); flex-shrink: 0;
    }
    .article-card__body { padding: var(--space-6); flex: 1; display: flex; flex-direction: column; }
    .article-card__date {
      font-size: var(--text-xs); color: var(--color-gray-400);
      font-weight: 500; margin-bottom: var(--space-3);
    }
    .article-card__title {
      font-family: var(--font-display); font-size: var(--text-base); font-weight: 700;
      color: var(--color-navy-900); line-height: 1.4; margin-bottom: var(--space-3);
      transition: color var(--transition-base); flex: 1;
    }
    .article-card:hover .article-card__title { color: var(--color-blue-500); }
    .article-card__excerpt {
      font-size: var(--text-sm); color: var(--color-gray-500);
      line-height: 1.7; margin-bottom: var(--space-4);
    }
    .article-card__footer {
      display: flex; align-items: center; justify-content: space-between;
      padding-top: var(--space-4); border-top: 1px solid var(--color-gray-100);
    }
    .article-card__read-time {
      font-size: var(--text-xs); color: var(--color-gray-400);
    }
    .article-card__link {
      font-size: var(--text-xs); font-weight: 700; color: var(--color-blue-500);
      display: flex; align-items: center; gap: 4px; transition: gap var(--transition-base);
    }
    .article-card__link:hover { gap: 8px; }

    /* Categories sidebar layout for a featured section */
    .insights-layout {
      display: grid; grid-template-columns: 1fr 280px;
      gap: var(--space-10); align-items: flex-start;
    }
    .insights-sidebar { position: sticky; top: calc(72px + 60px + var(--space-6)); }
    .sidebar-widget {
      background: var(--color-white); border: 1px solid var(--color-gray-200);
      border-radius: var(--radius-lg); padding: var(--space-6); margin-bottom: var(--space-5);
    }
    .sidebar-widget__title {
      font-family: var(--font-display); font-size: var(--text-sm); font-weight: 700;
      color: var(--color-navy-900); margin-bottom: var(--space-4);
      padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-gray-100);
    }
    .category-list { display: flex; flex-direction: column; gap: var(--space-2); }
    .category-item {
      display: flex; align-items: center; justify-content: space-between;
      padding: var(--space-2) var(--space-3); border-radius: var(--radius-md);
      font-size: var(--text-sm); color: var(--color-gray-600);
      cursor: pointer; transition: all var(--transition-base);
    }
    .category-item:hover { background: var(--color-gray-50); color: var(--color-navy-900); }
    .category-item__count {
      font-size: 11px; font-weight: 700; padding: 2px 7px;
      border-radius: var(--radius-full); background: var(--color-gray-100);
      color: var(--color-gray-400);
    }
    .sidebar-cta-box {
      background: var(--color-navy-900); border-radius: var(--radius-lg);
      padding: var(--space-6); position: relative; overflow: hidden;
    }
    .sidebar-cta-box::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255,203,5,0.4), transparent);
    }
    .sidebar-cta-box__label {
      font-size: 11px; font-weight: 700; letter-spacing: 0.1em;
      text-transform: uppercase; color: var(--color-gold-400); margin-bottom: var(--space-2);
    }
    .sidebar-cta-box__title {
      font-family: var(--font-display); font-size: var(--text-base); font-weight: 700;
      color: var(--color-white); margin-bottom: var(--space-3); line-height: 1.3;
    }
    .sidebar-cta-box__text {
      font-size: var(--text-xs); color: rgba(255,255,255,0.45);
      line-height: 1.6; margin-bottom: var(--space-5);
    }
    .sidebar-cta-box .btn { width: 100%; justify-content: center; font-size: 13px; }

    /* ── Archive section ── */
    .archive-section {
      padding: var(--space-24) 0;
      background: var(--color-gray-50);
    }
    .archive-header {
      margin-bottom: var(--space-16);
      text-align: center;
    }
    .archive-header__title {
      font-family: var(--font-display); font-size: var(--text-3xl); font-weight: 800;
      color: var(--color-navy-900); margin-bottom: var(--space-3);
    }
    .archive-header__sub {
      font-size: var(--text-lg); color: var(--color-gray-500);
    }
    .archive-timeline { display: flex; flex-direction: column; gap: var(--space-12); }
    .archive-period {
      background: var(--color-white); border-radius: var(--radius-lg);
      padding: var(--space-8); border: 1px solid var(--color-gray-200);
    }
    .archive-period__header {
      display: flex; align-items: center; gap: var(--space-4);
      margin-bottom: var(--space-8); padding-bottom: var(--space-6);
      border-bottom: 1px solid var(--color-gray-100);
    }
    .archive-period__label {
      font-family: var(--font-display); font-size: var(--text-lg); font-weight: 800;
      color: var(--color-navy-900);
    }
    .archive-period__count {
      background: var(--color-gold-400); color: var(--color-navy-900);
      font-size: 12px; font-weight: 700; padding: 4px 10px;
      border-radius: var(--radius-full);
    }
    .archive-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }

    @media (max-width: 1000px) {
      .insights-hero__inner { grid-template-columns: 1fr; }
      .newsletter-box { min-width: 0; width: 100%; margin-top: var(--space-6); }

      .insights-layout { grid-template-columns: 1fr; }
      .insights-sidebar { position: static; display: none; }
      .articles-grid { grid-template-columns: 1fr 1fr; }
      .archive-cards { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 640px) {
      .articles-grid { grid-template-columns: 1fr; }
    }

    .article-card__thumb-img {
      width: 100%; height: 100%;
      object-fit: cover; object-position: center;
      display: block;
      transition: transform var(--transition-smooth);
    }
    .article-card:hover .article-card__thumb-img { transform: scale(1.05); }

    .featured-post__visual-img {
      width: 100%; height: 100%;
      object-fit: cover; object-position: center;
      display: block; position: absolute; inset: 0;
      transition: transform var(--transition-smooth);
    }
    .featured-post:hover .featured-post__visual-img { transform: scale(1.04); }