/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
ol, ul { list-style: none; }

/* ── Variables ──────────────────────────────────────────── */
:root {
  --bg:           #f8f9fc;
  --surface:      #ffffff;
  --surface-alt:  #f1f3f9;
  --text:         #0f172a;
  --text-muted:   #64748b;
  --text-light:   #94a3b8;
  --accent:       #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff6ff;
  --accent-2:     #7c3aed;
  --border:       #e2e8f0;
  --radius:       10px;
  --radius-lg:    16px;
  --max-width:    1100px;
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow:       0 4px 16px rgba(0,0,0,0.07), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg:    0 12px 32px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.05);
}

/* ── Base ────────────────────────────────────────────────── */
html { font-size: 17px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }

/* ── Typography ──────────────────────────────────────────── */
h1 { font-size: 2.25rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1.2; margin-bottom: 1rem; }
h2 { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.02em; margin: 2rem 0 0.75rem; color: var(--text); }
h3 { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em; color: var(--text); }
p  { margin-bottom: 1rem; color: var(--text-muted); }
a  { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* ── Reading Progress Bar ────────────────────────────────── */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  width: 0%;
  z-index: 100;
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* ── Header ──────────────────────────────────────────────── */
header {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.875rem 0;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}
header .container {
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-size: 1.25rem; font-weight: 800; color: var(--text);
  letter-spacing: -0.03em; display: flex; align-items: center; gap: 0.15em;
}
.logo span { color: var(--accent); }
.logo:hover { text-decoration: none; color: var(--text); }

nav { display: flex; align-items: center; gap: 0.25rem; }
nav a {
  color: var(--text-muted); font-weight: 500; font-size: 0.9rem;
  padding: 0.4rem 0.75rem; border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}
nav a:hover { color: var(--text); background: var(--surface-alt); text-decoration: none; }
nav a.active { color: var(--accent); background: var(--accent-light); }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  padding: 5rem 0 3.5rem;
  text-align: center;
  background: linear-gradient(160deg, #eff6ff 0%, #f8f9fc 60%);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(124,58,237,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container { position: relative; z-index: 1; }
.hero-label {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: var(--accent-light); color: var(--accent);
  border: 1px solid rgba(37,99,235,0.15);
  padding: 0.3rem 0.9rem; border-radius: 999px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  margin-bottom: 1.25rem;
}
.hero h1 { font-size: 3rem; max-width: 700px; margin: 0 auto 1rem; }
.hero .subtitle {
  font-size: 1.15rem; max-width: 580px; margin: 0 auto 2rem; color: var(--text-muted); line-height: 1.65;
}
.hero-stats {
  display: flex; justify-content: center; gap: 2.5rem; margin-top: 2.5rem;
  padding-top: 2rem; border-top: 1px solid var(--border);
}
.hero-stat { text-align: center; }
.hero-stat-number { display: block; font-size: 1.5rem; font-weight: 800; color: var(--text); letter-spacing: -0.03em; }
.hero-stat-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

/* ── Category Pills ──────────────────────────────────────── */
.categories {
  padding: 1.5rem 0 0;
}
.category-pills {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.category-pill {
  display: inline-flex; align-items: center;
  padding: 0.35rem 0.9rem; border-radius: 999px;
  font-size: 0.82rem; font-weight: 600;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  background: var(--surface);
  cursor: pointer;
  transition: all 0.15s;
}
.category-pill:hover, .category-pill.active {
  border-color: var(--accent); color: var(--accent); background: var(--accent-light);
  text-decoration: none;
}

/* ── Post Grid ───────────────────────────────────────────── */
.posts { padding: 3rem 0 5rem; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.75rem;
}
.section-header h2 { margin: 0; }
.section-header a { font-size: 0.875rem; font-weight: 600; color: var(--accent); }
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* Featured post (first card) */
.post-grid .post-card:first-child {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: 2rem 2.5rem;
}
.post-grid .post-card:first-child .card-body { display: flex; flex-direction: column; justify-content: center; }

.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: rgba(37,99,235,0.2);
}
.card-image-placeholder {
  width: 100%; aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--accent-light) 0%, rgba(124,58,237,0.08) 100%);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; margin-bottom: 1.25rem;
  overflow: hidden; position: relative;
}
.card-image-placeholder::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(255,255,255,0.2) 100%);
}

.post-meta-row {
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
  background: var(--accent-light); color: var(--accent);
}
.tag-purple { background: #f3f0ff; color: var(--accent-2); }
.post-date, .post-read-time {
  font-size: 0.8rem; color: var(--text-light);
}
.post-date::before { content: '·'; margin-right: 0.5rem; color: var(--border); }

.post-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; line-height: 1.4; }
.post-card h3 a { color: var(--text); }
.post-card h3 a:hover { color: var(--accent); text-decoration: none; }
.post-card > p { font-size: 0.92rem; flex: 1; margin-bottom: 1rem; }

.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 1rem; border-top: 1px solid var(--border);
  margin-top: auto;
}
.card-footer a {
  font-size: 0.85rem; font-weight: 600; color: var(--accent);
  display: inline-flex; align-items: center; gap: 0.3rem;
}
.card-footer a:hover { text-decoration: none; gap: 0.5rem; }
.card-footer .post-date { font-size: 0.8rem; color: var(--text-light); }

/* Coming soon badge */
.badge-soon {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700;
  padding: 0.15rem 0.55rem; border-radius: 999px;
  background: #fef3c7; color: #92400e;
  letter-spacing: 0.04em; text-transform: uppercase;
}

/* ── Page Content ────────────────────────────────────────── */
.page-content { padding: 3rem 0 5rem; }
.page-content h1 { margin-bottom: 1.5rem; }
.page-content ul { margin: 0 0 1.5rem 1.5rem; color: var(--text-muted); }
.page-content li { margin-bottom: 0.5rem; }

/* ── Error Page ──────────────────────────────────────────── */
.error-page { text-align: center; padding: 6rem 0; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.75rem 2rem; background: var(--accent);
  color: #fff !important; border-radius: var(--radius); font-weight: 600;
  text-decoration: none !important; font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(37,99,235,0.3);
  transition: background 0.15s, box-shadow 0.15s, transform 0.15s;
}
.btn:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 16px rgba(37,99,235,0.4);
  transform: translateY(-1px);
  text-decoration: none !important;
}
.btn-outline {
  background: transparent; color: var(--accent) !important;
  border: 1.5px solid var(--accent);
  box-shadow: none;
}
.btn-outline:hover { background: var(--accent-light); box-shadow: none; transform: none; }

/* ── Footer ──────────────────────────────────────────────── */
footer {
  margin-top: auto;
  background: var(--text);
  color: rgba(255,255,255,0.7);
  padding: 3rem 0 2rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 2rem;
}
.footer-brand .logo { color: #fff; font-size: 1.1rem; margin-bottom: 0.75rem; display: block; }
.footer-brand .logo span { color: #60a5fa; }
.footer-brand p { font-size: 0.875rem; margin: 0; color: rgba(255,255,255,0.5); }
.footer-col h4 { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 1rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { font-size: 0.875rem; color: rgba(255,255,255,0.6); transition: color 0.15s; }
.footer-links a:hover { color: #fff; text-decoration: none; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 0.75rem;
}
footer p { font-size: 0.8rem; margin: 0; color: rgba(255,255,255,0.4); }
.footer-nav { display: flex; gap: 1.25rem; }
.footer-nav a { font-size: 0.8rem; color: rgba(255,255,255,0.4); }
.footer-nav a:hover { color: rgba(255,255,255,0.8); text-decoration: none; }

/* ── Blog Post Article ───────────────────────────────────── */
.post-article { padding: 2.5rem 0 5rem; }

/* ── Breadcrumb ──────────────────────────────────────────── */
.breadcrumb { margin-bottom: 2rem; }
.breadcrumb ol {
  list-style: none !important;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  font-size: 0.82rem;
  padding: 0;
  margin: 0;
  align-items: center;
}
.breadcrumb li {
  display: flex;
  align-items: center;
  color: var(--text-light);
}
.breadcrumb li + li::before {
  content: "/";
  margin: 0 0.4rem;
  color: var(--border);
  font-weight: 400;
}
.breadcrumb a { color: var(--text-muted); font-weight: 500; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb li[aria-current="page"] { color: var(--text-muted); font-weight: 500; }

/* ── Article Layout ─────────────────────────────────────── */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3.5rem;
  align-items: start;
}

.article-header { margin-bottom: 2rem; }
.article-meta {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  align-items: center; margin-bottom: 1.25rem;
}
.article-category {
  background: var(--accent); color: #fff;
  padding: 0.2rem 0.65rem; border-radius: 999px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
}
.article-date, .article-read-time { font-size: 0.82rem; color: var(--text-light); }
.article-date::before, .article-read-time::before { content: '·'; margin: 0 0.35rem; color: var(--border); }

.article-header h1 { font-size: 2.5rem; margin-bottom: 1.25rem; }

.article-intro {
  font-size: 1.1rem; color: var(--text);
  line-height: 1.8;
  border-left: 3px solid var(--accent);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  background: var(--accent-light);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ── Article Body ────────────────────────────────────────── */
.article-body h2 {
  color: var(--text); margin-top: 3rem; padding-top: 2.5rem;
  border-top: 1px solid var(--border);
  font-size: 1.5rem;
}
.article-body h3 { color: var(--text); margin: 1.75rem 0 0.6rem; font-size: 1.1rem; }
.article-body p { color: var(--text); line-height: 1.8; }
.article-body ul, .article-body ol {
  margin: 0.75rem 0 1.25rem 1.5rem;
  list-style: disc;
}
.article-body ol { list-style: decimal; }
.article-body li { color: var(--text); margin-bottom: 0.6rem; line-height: 1.75; }
.article-body strong { color: var(--text); font-weight: 700; }

/* ── Sticky Sidebar ──────────────────────────────────────── */
.article-sidebar { position: sticky; top: 80px; }

/* ── Table of Contents ───────────────────────────────────── */
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.toc-title {
  font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.toc-list { padding: 0; margin: 0; }
.toc-list li { margin-bottom: 0.3rem; }
.toc-list a {
  font-size: 0.875rem; color: var(--text-muted); font-weight: 500;
  display: block; padding: 0.25rem 0.5rem;
  border-radius: 5px;
  border-left: 2px solid transparent;
  transition: all 0.15s;
}
.toc-list a:hover, .toc-list a.active {
  color: var(--accent); background: var(--accent-light);
  border-left-color: var(--accent);
  text-decoration: none;
}

/* ── Share Box (sidebar) ─────────────────────────────────── */
.share-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.share-box h4 { font-size: 0.82rem; font-weight: 700; color: var(--text-muted); margin-bottom: 0.75rem; }
.share-buttons { display: flex; gap: 0.5rem; justify-content: center; }
.share-btn {
  flex: 1; padding: 0.5rem; border-radius: var(--radius);
  font-size: 0.8rem; font-weight: 600;
  text-decoration: none; color: #fff;
  text-align: center; transition: opacity 0.15s;
}
.share-btn:hover { opacity: 0.85; text-decoration: none; color: #fff; }
.share-twitter { background: #1da1f2; }
.share-linkedin { background: #0a66c2; }

/* ── FAQ Section ─────────────────────────────────────────── */
.faq-section { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.faq-section h2 { margin-top: 0; padding-top: 0; border-top: none; }
.faq-item {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-item summary {
  padding: 1rem 1.25rem;
  font-weight: 600; font-size: 0.95rem; color: var(--text);
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  list-style: none;
  user-select: none;
  transition: background 0.15s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.2rem; color: var(--text-muted); font-weight: 400; }
details[open] .faq-item summary::after { content: '−'; }
details[open] > summary { background: var(--surface-alt); }
.faq-item p {
  padding: 0.75rem 1.25rem 1rem;
  margin: 0; font-size: 0.92rem; color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

/* Fix: legacy faq-item with h3 inside (not details) */
.faq-section .faq-item h3 {
  font-size: 1rem; margin: 0 0 0.6rem; color: var(--text);
  padding: 1rem 1.25rem 0;
}
.faq-section .faq-item p {
  padding: 0 1.25rem 1rem;
  border-top: none;
}

/* ── Article Footer / Sources ────────────────────────────── */
.article-footer { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.article-sources { font-size: 0.82rem; color: var(--text-muted); line-height: 1.7; }

/* ── Related Posts ───────────────────────────────────────── */
.related-posts {
  margin-top: 4rem; padding-top: 3rem; border-top: 1px solid var(--border);
}
.related-posts h2 { margin-top: 0; padding-top: 0; border-top: none; font-size: 1.3rem; }

/* ── Back to Top Button ──────────────────────────────────── */
#back-to-top {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--accent); color: #fff;
  border: none; border-radius: 50%; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 16px rgba(37,99,235,0.4);
  opacity: 0; transform: translateY(10px);
  transition: opacity 0.25s, transform 0.25s;
  z-index: 40;
  text-decoration: none;
}
#back-to-top.visible { opacity: 1; transform: translateY(0); }
#back-to-top:hover { background: var(--accent-hover); text-decoration: none; }

/* ── Trust Section ────────────────────────────────────────── */
.trust-section {
  padding: 3.5rem 0 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.trust-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: box-shadow 0.2s, transform 0.2s;
}
.trust-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.trust-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}
.trust-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.trust-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

/* ── Featured Topics ──────────────────────────────────────── */
.featured-topics {
  padding: 2.5rem 0;
  background: var(--bg);
}
.topic-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.topic-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.15s;
}
.topic-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
  text-decoration: none;
}

/* ── Newsletter CTA ───────────────────────────────────────── */
.newsletter-cta {
  padding: 3rem 0;
  background: var(--accent);
}
.newsletter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.newsletter-text h2 {
  color: #fff;
  margin: 0 0 0.5rem;
  font-size: 1.4rem;
}
.newsletter-text p {
  color: rgba(255,255,255,0.8);
  margin: 0;
  font-size: 0.95rem;
}
.newsletter-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.newsletter-input {
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius);
  border: none;
  font-size: 0.95rem;
  min-width: 260px;
  font-family: inherit;
  outline: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.newsletter-cta .btn {
  background: var(--text);
  box-shadow: none;
}
.newsletter-cta .btn:hover {
  background: #1e293b;
}

/* ── About Brief ──────────────────────────────────────────── */
.about-brief {
  padding: 2.5rem 0;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}
.about-brief-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.about-brief p {
  flex: 1;
  min-width: 280px;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-inner .footer-brand { grid-column: 1 / -1; }
  .post-grid .post-card:first-child {
    grid-template-columns: 1fr;
    padding: 1.75rem;
  }
  .post-grid .post-card:first-child .card-image-placeholder { display: none; }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.3rem; }
  .article-header h1 { font-size: 1.8rem; }
  .article-intro { font-size: 1rem; }
  .hero-stats { gap: 1.5rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .post-grid { grid-template-columns: 1fr; }
  .post-grid .post-card:first-child { grid-column: 1; }
}