@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

:root {
  --bg: #F9F7F4; --bg-card: #FFFFFF; --surface: #F2EFE9; --border: #E5E0D8;
  --text-primary: #1A1814; --text-secondary: #6B6560; --text-muted: #A09A93;
  --accent: #2D5A4E; --accent-light: #EAF1EF;
  --serif: 'DM Serif Display', Georgia, serif; --sans: 'DM Sans', system-ui, sans-serif;
  --radius: 4px; --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--sans); background: var(--bg); color: var(--text-primary); -webkit-font-smoothing: antialiased; }

nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(249,247,244,0.88); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 0 2rem; height: 60px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--serif); font-size: 1.15rem; color: var(--text-primary); text-decoration: none; }
.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a { font-size: 0.875rem; color: var(--text-secondary); text-decoration: none; transition: color var(--transition); }
.nav-links a:hover { color: var(--accent); }

.container { max-width: 1080px; margin: 0 auto; padding: 0 2rem; }
.post-container { max-width: 720px; margin: 0 auto; padding: 0 2rem; }

.post-header { padding: 7rem 0 3rem; border-bottom: 1px solid var(--border); margin-bottom: 3rem; }
.back-link { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; color: var(--text-muted); text-decoration: none; margin-bottom: 2rem; transition: color var(--transition); }
.back-link:hover { color: var(--accent); }
.post-cat { font-size: 0.72rem; font-weight: 500; color: var(--accent); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1rem; }
.post-h-title { font-family: var(--serif); font-size: clamp(1.9rem, 4vw, 2.8rem); line-height: 1.18; letter-spacing: -0.02em; margin-bottom: 1rem; }
.post-h-meta { display: flex; gap: 1.5rem; font-size: 0.8rem; color: var(--text-muted); }

.post-body { padding-bottom: 5rem; }
.post-content { line-height: 1.85; }
.post-content h2 { font-family: var(--serif); font-size: 1.6rem; letter-spacing: -0.01em; margin: 2.5rem 0 1rem; color: var(--text-primary); }
.post-content h3 { font-size: 1.1rem; font-weight: 500; margin: 2rem 0 0.75rem; }
.post-content p { color: var(--text-secondary); margin-bottom: 1.25rem; font-weight: 300; font-size: 1.0rem; }
.post-content ul, .post-content ol { margin: 0 0 1.25rem 1.5rem; color: var(--text-secondary); font-weight: 300; }
.post-content li { margin-bottom: 0.4rem; }
.post-content blockquote { border-left: 3px solid var(--accent); padding: 0.75rem 1.5rem; margin: 2rem 0; background: var(--accent-light); border-radius: 0 var(--radius) var(--radius) 0; }
.post-content blockquote p { color: var(--accent); font-style: italic; margin: 0; }
.post-content code { font-size: 0.85em; background: var(--surface); padding: 0.15em 0.4em; border-radius: 3px; font-family: 'SF Mono', 'Fira Code', monospace; color: var(--accent); }
.post-content pre { background: var(--text-primary); border-radius: var(--radius); padding: 1.5rem; margin: 1.5rem 0; overflow-x: auto; }
.post-content pre code { background: none; color: #A8D5A2; padding: 0; }
.post-content strong { font-weight: 500; color: var(--text-primary); }
.post-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

.post-footer { margin-top: 4rem; padding-top: 2rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.share-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); font-weight: 500; }
.share-links { display: flex; gap: 0.75rem; }
.share-btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.45rem 1rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.8rem; color: var(--text-secondary); text-decoration: none; transition: all var(--transition); }
.share-btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-back { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.45rem 1rem; background: var(--accent); color: #fff; border-radius: var(--radius); font-size: 0.8rem; font-weight: 500; text-decoration: none; transition: all var(--transition); }
.btn-back:hover { background: #1F3F36; }

footer { border-top: 1px solid var(--border); padding: 2rem; text-align: center; font-size: 0.8rem; color: var(--text-muted); }
footer a { color: var(--accent); text-decoration: none; }

@media (max-width: 768px) {
  nav { padding: 0 1rem; }
  .nav-links li:not(:last-child) { display: none; }
  .post-container { padding: 0 1.25rem; }
  .post-header { padding: 5.5rem 0 2rem; }
  .post-h-meta { flex-wrap: wrap; gap: 0.75rem; }
}