:root {
      --color-bg-primary: #0f1018;
      --color-bg-secondary: #1a1b2e;
      --color-bg-accent: #25273d;
      --color-text-primary: #ffffff;
      --color-text-secondary: #b8bdd1;
      --color-text-muted: #7a7f9a;
      --color-accent: #6b7fd7;
      --color-accent-light: #8fa0f0;
      --gradient-hero: radial-gradient(ellipse at top, #25273d 0%, #1a1b2e 50%, #0f1018 100%);
      --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
      --max-width: 760px;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: 'Inter', system-ui, sans-serif;
      background: var(--gradient-hero);
      color: var(--color-text-primary);
      line-height: 1.7;
      min-height: 100vh;
    }
    .container {
      max-width: 1100px;
      margin: 0 auto;
      padding-left: max(1.5rem, env(safe-area-inset-left));
      padding-right: max(1.5rem, env(safe-area-inset-right));
    }
    .site-header {
      padding: 1.25rem 0;
      border-bottom: 1px solid rgba(107, 127, 215, 0.15);
    }
    .site-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 0.65rem;
      font-family: 'Outfit', sans-serif;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--color-text-primary);
      text-decoration: none;
    }
    .brand img {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      flex-shrink: 0;
    }
    .brand:hover { color: var(--color-accent-light); }
    .nav-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
    .nav-links a {
      color: var(--color-text-secondary);
      text-decoration: none;
      font-size: 0.95rem;
    }
    .nav-links a:hover { color: var(--color-accent-light); }
    .breadcrumb {
      margin: 0 0 1.25rem;
    }
    .breadcrumb-list {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.25rem 0.35rem;
      list-style: none;
      padding: 0.625rem 1rem;
      background: rgba(26, 27, 46, 0.72);
      border: 1px solid rgba(107, 127, 215, 0.14);
      border-radius: 12px;
      font-size: 0.8125rem;
      line-height: 1.4;
    }
    .breadcrumb-list li {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      min-width: 0;
    }
    .breadcrumb-list li + li::before {
      content: '';
      display: inline-block;
      width: 4px;
      height: 4px;
      margin: 0 0.15rem;
      border-right: 1.5px solid var(--color-text-muted);
      border-top: 1.5px solid var(--color-text-muted);
      transform: rotate(45deg);
      flex-shrink: 0;
      opacity: 0.55;
    }
    .breadcrumb-list a {
      color: var(--color-accent-light);
      text-decoration: none;
      white-space: nowrap;
    }
    .breadcrumb-list a:hover { text-decoration: underline; }
    .breadcrumb-current {
      color: var(--color-text-muted);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .article-wrap { padding-top: 1.25rem; padding-bottom: 4rem; }
    .article-card {
      width: 100%;
    }
    .article-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.5rem 0.75rem;
      color: var(--color-text-muted);
      font-size: 0.875rem;
      margin-bottom: 1rem;
      max-width: var(--max-width);
    }
    .article-meta time { color: var(--color-accent); }
    .article-meta span {
      display: inline-flex;
      align-items: center;
      gap: 0.75rem;
    }
    .article-meta span::before {
      content: '';
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: rgba(107, 127, 215, 0.45);
      flex-shrink: 0;
    }
    .article-byline {
      color: var(--color-text-muted);
      font-size: 0.9rem;
      margin: -0.5rem 0 1.25rem;
      max-width: var(--max-width);
    }
    .article-byline a {
      color: var(--color-accent-light);
      text-decoration: none;
    }
    .article-byline a:hover { text-decoration: underline; }
    .post-cta {
      margin: 2.5rem auto;
      padding: 1.75rem;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(107, 127, 215, 0.12), rgba(107, 127, 215, 0.04));
      border: 1px solid rgba(107, 127, 215, 0.2);
      max-width: var(--max-width);
      text-align: center;
    }
    .post-cta h2 {
      font-family: 'Outfit', sans-serif;
      font-size: 1.25rem;
      margin: 0 0 0.75rem;
      color: var(--color-text-primary);
    }
    .post-cta p {
      color: var(--color-text-secondary);
      margin: 0 0 1.25rem;
      line-height: 1.6;
    }
    .post-cta-btn {
      display: inline-block;
      padding: 0.75rem 1.25rem;
      border-radius: 8px;
      background: var(--color-accent);
      color: #fff;
      font-weight: 600;
      text-decoration: none;
      transition: background 0.2s ease;
    }
    .post-cta-btn:hover { background: var(--color-accent-light); }
    h1 {
      font-family: 'Outfit', sans-serif;
      font-size: clamp(1.75rem, 4vw, 2.5rem);
      line-height: 1.2;
      margin-bottom: 1.5rem;
      max-width: var(--max-width);
    }
    .hero-image {
      width: 100%;
      height: auto;
      border-radius: 12px;
      margin-bottom: 2rem;
      box-shadow: var(--shadow-md);
      display: block;
    }
    .article-content {
      max-width: var(--max-width);
      margin: 0 auto;
    }
    .article-content h2 {
      font-family: 'Outfit', sans-serif;
      font-size: 1.5rem;
      margin: 2.5rem 0 1rem;
      color: var(--color-text-primary);
    }
    .article-content h3 {
      font-family: 'Outfit', sans-serif;
      font-size: 1.2rem;
      margin: 2rem 0 0.75rem;
    }
    .article-content p {
      color: var(--color-text-secondary);
      margin-bottom: 1.25rem;
    }
    .article-content ul, .article-content ol {
      color: var(--color-text-secondary);
      margin: 0 0 1.25rem 1.25rem;
    }
    .article-content li { margin-bottom: 0.5rem; }
    .article-content a {
      color: var(--color-accent-light);
      text-decoration: underline;
      text-underline-offset: 2px;
    }
    .article-content blockquote {
      border-left: 3px solid var(--color-accent);
      padding: 0.75rem 0 0.75rem 1.25rem;
      margin: 1.5rem 0;
      color: var(--color-text-secondary);
      font-style: italic;
    }
    .article-content table {
      width: 100%;
      border-collapse: collapse;
      margin: 1.5rem 0 2rem;
      font-size: 0.92rem;
    }
    .article-content th,
    .article-content td {
      border: 1px solid rgba(107, 127, 215, 0.2);
      padding: 0.65rem 0.75rem;
      text-align: left;
      vertical-align: top;
      color: var(--color-text-secondary);
    }
    .article-content th {
      background: rgba(26, 27, 46, 0.8);
      color: var(--color-text-primary);
      font-weight: 600;
    }
    .article-content figure {
      margin: 2rem 0;
    }
    .article-content figcaption {
      font-size: 0.875rem;
      color: var(--color-text-muted);
      margin-top: 0.5rem;
    }
    .ai-share {
      max-width: var(--max-width);
      margin: 2.5rem auto 0;
      padding: 1rem 1.25rem;
      background: rgba(26, 27, 46, 0.72);
      border: 1px solid rgba(107, 127, 215, 0.14);
      border-radius: 12px;
    }
    .ai-share--intro {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 0.5rem 0.75rem;
      margin: -0.5rem auto 1.75rem;
      padding: 0.625rem 0.875rem;
      background: transparent;
      border: none;
      border-radius: 0;
    }
    .ai-share--intro .ai-share-label {
      display: inline;
      margin-bottom: 0;
      font-size: 0.75rem;
      white-space: nowrap;
    }
    .ai-share--intro .ai-share-buttons {
      justify-content: center;
      gap: 0.375rem;
    }
    .ai-share--intro .ai-share-btn {
      padding: 0.35rem 0.7rem;
      font-size: 0.75rem;
    }
    .ai-share--intro .ai-share-btn svg {
      width: 0.875rem;
      height: 0.875rem;
    }
    .ai-share-label {
      display: block;
      font-size: 0.8125rem;
      color: var(--color-text-muted);
      margin-bottom: 0.75rem;
    }
    .ai-share-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .ai-share-btn {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.45rem 0.9rem;
      border-radius: 999px;
      font-size: 0.8125rem;
      font-weight: 500;
      text-decoration: none;
      color: var(--color-text-secondary);
      background: var(--color-bg-accent);
      border: 1px solid rgba(107, 127, 215, 0.2);
      transition: border-color 0.2s, color 0.2s, background 0.2s;
    }
    .ai-share-btn:hover {
      color: var(--color-text-primary);
      border-color: var(--color-accent);
      background: rgba(37, 39, 61, 0.95);
    }
    .ai-share-btn svg {
      width: 1rem;
      height: 1rem;
      flex-shrink: 0;
      opacity: 0.85;
    }
    .tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 0.5rem;
      margin: 2.5rem auto 0;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(107, 127, 215, 0.15);
      max-width: var(--max-width);
    }
    .tag {
      background: var(--color-bg-accent);
      color: var(--color-text-secondary);
      padding: 0.25rem 0.75rem;
      border-radius: 999px;
      font-size: 0.8rem;
    }
    .post-nav {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      margin-top: 3rem;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      width: 100%;
    }
    .post-nav a {
      display: block;
      padding: 1rem 1.25rem;
      background: var(--color-bg-secondary);
      border-radius: 10px;
      text-decoration: none;
      border: 1px solid rgba(107, 127, 215, 0.15);
      transition: border-color 0.2s;
      min-width: 0;
    }
    .post-nav a:hover { border-color: var(--color-accent); }
    .post-nav a.prev {
      grid-column: 1;
      text-align: left;
    }
    .post-nav a.next {
      grid-column: 2;
      text-align: right;
    }
    .post-nav a:only-child {
      max-width: calc(50% - 0.5rem);
    }
    .post-nav a.prev:only-child {
      justify-self: start;
    }
    .post-nav a.next:only-child {
      justify-self: end;
    }
    .post-nav .label {
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--color-accent);
      margin-bottom: 0.35rem;
    }
    .post-nav .title {
      color: var(--color-text-primary);
      font-weight: 500;
      font-size: 0.95rem;
      line-height: 1.35;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .back-to-blog-wrap {
      text-align: center;
      margin-top: 2rem;
      width: 100%;
    }
    .back-to-blog {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      color: var(--color-accent-light);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 500;
      padding: 0.65rem 1rem;
      border-radius: 999px;
      border: 1px solid rgba(107, 127, 215, 0.2);
      background: rgba(26, 27, 46, 0.5);
    }
    .back-to-blog:hover {
      border-color: var(--color-accent);
      color: var(--color-text-primary);
    }
    .post-faq {
      margin-top: 2.5rem;
      padding-top: 2rem;
      border-top: 1px solid rgba(107, 127, 215, 0.15);
    }
    .post-faq h2 {
      font-family: 'Outfit', sans-serif;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
    }
    .post-faq-item {
      margin-bottom: 1.5rem;
      padding-bottom: 1.5rem;
      border-bottom: 1px solid rgba(107, 127, 215, 0.1);
    }
    .post-faq-item:last-child {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }
    .post-faq-item h3 {
      font-family: 'Outfit', sans-serif;
      font-size: 1.1rem;
      margin-bottom: 0.5rem;
      color: var(--color-text-primary);
    }
    .post-faq-item p {
      color: var(--color-text-secondary);
      margin: 0;
    }
    footer {
      padding: 2.5rem 0;
      background: var(--color-bg-secondary);
      text-align: center;
      border-top: 1px solid rgba(107, 127, 215, 0.1);
      margin-top: 2rem;
    }
    .footer-links {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      flex-wrap: wrap;
      margin-bottom: 1rem;
    }
    .footer-links a {
      color: var(--color-text-secondary);
      text-decoration: none;
      font-size: 0.9rem;
    }
    .footer-links a:hover { color: var(--color-accent-light); }
    .footer-copy { color: var(--color-text-muted); font-size: 0.8rem; }
    @media (max-width: 768px) {
      .site-header { padding: 0.875rem 0; }
      .brand { font-size: 1.0625rem; gap: 0.5rem; }
      .brand img { width: 36px; height: 36px; border-radius: 8px; }
      .nav-links a { font-size: 0.875rem; }
      .article-wrap { padding-top: 0.75rem; padding-bottom: 2.5rem; }
      .breadcrumb { margin-bottom: 1rem; }
      .breadcrumb-list {
        padding: 0.55rem 0.75rem;
        border-radius: 10px;
        font-size: 0.75rem;
      }
      .breadcrumb-current { -webkit-line-clamp: 1; }
      .article-meta {
        font-size: 0.8125rem;
        gap: 0.4rem 0.6rem;
      }
      h1 {
        font-size: clamp(1.5rem, 6.5vw, 1.85rem);
        margin-bottom: 1.125rem;
        line-height: 1.25;
      }
      .hero-image {
        border-radius: 10px;
        margin-bottom: 1.5rem;
      }
      .article-content h2 {
        font-size: 1.2rem;
        margin: 2rem 0 0.75rem;
        line-height: 1.35;
      }
      .article-content h3 {
        font-size: 1.05rem;
        margin: 1.5rem 0 0.5rem;
      }
      .article-content p,
      .article-content li {
        font-size: 1rem;
        line-height: 1.65;
      }
      .article-content ul,
      .article-content ol {
        margin-left: 1.125rem;
        padding-right: 0.25rem;
      }
      .article-content blockquote {
        padding: 0.65rem 0 0.65rem 1rem;
        margin: 1.25rem 0;
        font-size: 0.95rem;
      }
      .ai-share--intro {
        margin: 0 auto 1.25rem;
        gap: 0.5rem;
      }
      .ai-share--intro .ai-share-label {
        width: 100%;
        text-align: center;
      }
      .ai-share--intro .ai-share-btn { font-size: 0.7rem; padding: 0.35rem 0.6rem; }
      .tags {
        margin-top: 2rem;
        padding-top: 1.25rem;
        gap: 0.4rem;
      }
      .post-nav {
        margin-top: 2rem;
        gap: 0.75rem;
      }
      .post-nav a { padding: 0.875rem 1rem; }
      .post-nav .title { font-size: 0.875rem; }
      footer { padding: 2rem 0; padding-bottom: max(2rem, env(safe-area-inset-bottom)); }
      .footer-links { gap: 1rem; flex-direction: column; }
    }
    @media (max-width: 640px) {
      .post-nav { grid-template-columns: 1fr; }
      .post-nav a.prev,
      .post-nav a.next {
        grid-column: 1;
        text-align: left;
        max-width: none;
        justify-self: stretch;
      }
    }
    @media (max-width: 380px) {
      .breadcrumb-list li:first-child { display: none; }
      .breadcrumb-list li:nth-child(2)::before { display: none; }
    }

/* Blog index */
.page-header {
  padding: 3rem 0 2rem;
  text-align: center;
}
.page-header h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2rem, 5vw, 2.75rem);
  margin: 0 auto 0.75rem;
  text-align: center;
  max-width: none;
}
.page-header p {
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}
.rss-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--color-accent-light);
  font-size: 0.9rem;
  text-decoration: none;
}
.rss-link:hover { text-decoration: underline; }
.posts-grid {
  display: grid;
  gap: 1.5rem;
  padding-bottom: 3rem;
}
.post-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  background: var(--color-bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(107, 127, 215, 0.12);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
}
.post-card:hover {
  border-color: rgba(107, 127, 215, 0.35);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.post-card-media { overflow: hidden; }
.post-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 160px;
  display: block;
  transition: transform 0.25s ease;
}
.post-card:hover img { transform: scale(1.03); }
.post-card-body { padding: 1.5rem; }
.post-card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.post-card-meta time { color: var(--color-accent); }
.post-card h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  line-height: 1.3;
  color: var(--color-text-primary);
}
.post-card:hover h2 { color: var(--color-accent-light); }
.post-card-excerpt {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}
.read-more {
  color: var(--color-accent-light);
  font-weight: 500;
  font-size: 0.9rem;
}
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-bottom: 3rem;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.75rem;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.9rem;
}
.pagination a {
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  border: 1px solid rgba(107, 127, 215, 0.15);
}
.pagination a:hover {
  color: var(--color-accent-light);
  border-color: var(--color-accent);
}
.pagination .current {
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
}
.empty-state {
  text-align: center;
  color: var(--color-text-muted);
  padding: 3rem 0;
}
@media (max-width: 720px) {
  .post-card { grid-template-columns: 1fr; }
  .post-card-body { padding: 1.25rem; }
  .post-card img { min-height: 180px; max-height: 200px; }
}