:root {
  --bg: #0b0f19;
  --bg-elevated: #111827;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #1e293b;
  --accent: #0284c7;
  --accent2: #3b82f6;
  --accent3: #06b6d4;
  --glow: rgba(6, 182, 212, 0.08);
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}
.container { max-width: 880px; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); padding: 1rem 0; background: rgba(11,15,25,0.95); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 100; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.logo-link { display: block; }
.logo-img { height: 48px; width: auto; }
.main-nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.main-nav a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: color .2s; }
.main-nav a:hover { color: var(--accent3); }

/* Hero */
.hero { padding: 3rem 0 2rem; text-align: center; }
.hero-logo { max-width: 520px; width: 100%; height: auto; margin-bottom: 1.5rem; }
.hero-tagline { color: var(--text-muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* Posts */
.post-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 16px; padding: 1.75rem; margin-bottom: 1.5rem; transition: transform .25s, border-color .25s, box-shadow .25s; }
.post-card:hover { transform: translateY(-3px); border-color: rgba(6,182,212,0.25); box-shadow: 0 0 24px var(--glow); }
.post-meta { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin-bottom: 0.75rem; font-size: 0.8rem; color: var(--text-muted); }
.post-meta time { color: var(--accent3); font-weight: 500; }
.post-cats a { color: var(--accent2); text-decoration: none; background: rgba(59,130,246,0.08); padding: 0.15rem 0.6rem; border-radius: 6px; font-size: 0.75rem; }
.post-card h2 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.post-card h2 a { color: var(--text); text-decoration: none; transition: color .2s; }
.post-card h2 a:hover { color: var(--accent3); }
.post-summary { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }
.read-more { display: inline-block; margin-top: 1rem; color: var(--accent3); text-decoration: none; font-weight: 600; font-size: 0.9rem; }
.read-more:hover { text-decoration: underline; }

/* Single Post */
.single-post { padding: 2rem 0; }
.single-post h1 { font-size: 1.8rem; margin: 0.75rem 0 1.5rem; letter-spacing: -0.5px; }
.post-content { color: var(--text); line-height: 1.8; }
.post-content p { margin-bottom: 1.2rem; }
.post-content a { color: var(--accent3); word-break: break-word; }
.post-content h2 { font-size: 1.4rem; margin: 2rem 0 1rem; color: var(--accent2); }
.post-content h3 { font-size: 1.1rem; margin: 1.5rem 0 0.75rem; color: var(--accent3); }
.post-content ul, .post-content ol { margin: 0 0 1.2rem 1.5rem; }
.post-content li { margin-bottom: 0.3rem; }
.post-content blockquote { border-left: 3px solid var(--accent3); padding-left: 1rem; margin: 1.2rem 0; color: var(--text-muted); font-style: italic; }
.post-source { margin-left: auto; font-size: 0.8rem; }
.post-source a { color: var(--accent2); }
.post-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.tag { background: rgba(59,130,246,0.08); color: var(--accent2); padding: 0.3rem 0.8rem; border-radius: 20px; font-size: 0.8rem; }

/* Disclosures */
.disclosure { background: rgba(6,182,212,0.05); border: 1px solid rgba(6,182,212,0.15); border-radius: 10px; padding: 1rem; margin: 1.5rem 0; font-size: 0.85rem; color: var(--text-muted); }
.disclosure strong { color: var(--accent3); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 2rem 0; margin-top: auto; text-align: center; }
.site-footer p { color: #475569; font-size: 0.85rem; }
.footer-links { display: flex; gap: 1rem; justify-content: center; margin-top: 0.5rem; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.8rem; }
.footer-links a:hover { color: var(--accent3); }

/* Responsive */
@media (max-width: 640px) {
  .site-header .container { justify-content: center; text-align: center; }
  .main-nav { justify-content: center; width: 100%; }
  .hero-logo { max-width: 100%; }
  .hero { padding: 2rem 0 1rem; }
  .single-post h1 { font-size: 1.5rem; }
}
.pagination { display: flex; justify-content: center; gap: 1rem; margin: 2rem 0; }
.pagination a { color: var(--accent3); text-decoration: none; }
.page-title { font-size: 1.6rem; margin: 2rem 0 1.5rem; }