:root {
  --ink:        #16181a;
  --ink-soft:   #353a3f;
  --ink-mute:   #6b6f76;
  --muted:      #8a8f97;
  --line:       #e7e3d6;
  --line-soft:  #efece2;
  --paper:      #f6f3ea;
  --paper-2:    #fbf9f2;
  --card:       #ffffff;
  --dark:       #161a1c;
  --forest:     #2e3a2e;
  --forest-2:   #4a5d4a;
  --forest-3:   #6b7d6b;
  --radius:     12px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink); background: var(--paper);
  font-size: 16px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--forest); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--ink); }

.page {
  max-width: 720px; margin: 0 auto;
  padding: 28px 32px 80px 32px;
  background: var(--paper-2);
  border-left: 1px solid var(--line-soft);
  border-right: 1px solid var(--line-soft);
  min-height: 100vh;
}
@media (max-width: 720px) { .page { padding: 20px 22px 56px 22px; } }

h1, h2, h3, h4 {
  font-family: 'Inter Tight', 'Inter', sans-serif;
  color: var(--ink); margin: 0; letter-spacing: -0.02em; font-weight: 700;
}
h1 { font-size: 40px; line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: 24px; line-height: 1.2; margin: 36px 0 12px 0; }
h3 { font-size: 18px; line-height: 1.3; margin: 24px 0 8px 0; font-weight: 600; }
@media (max-width: 720px) { h1 { font-size: 30px; } h2 { font-size: 20px; } }

article p { margin: 14px 0; color: var(--ink-soft); }
article ul, article ol { color: var(--ink-soft); padding-left: 22px; }
article li { margin: 6px 0; }
article strong { color: var(--ink); font-weight: 600; }
article blockquote {
  border-left: 3px solid var(--forest);
  padding: 4px 0 4px 18px; margin: 18px 0;
  color: var(--ink); font-style: italic;
}
article img { max-width: 100%; height: auto; border-radius: var(--radius); }

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase; font-size: 11px; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 24px; margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.topbar .brand img { height: 20px; display: block; }
.topbar .nav { display: flex; gap: 18px; align-items: center; font-size: 13px; color: var(--ink-soft); }
.topbar .nav a { text-decoration: none; color: var(--ink-soft); font-weight: 500; }
.topbar .nav a:hover { color: var(--ink); }
.topbar .nav .cta {
  background: var(--ink); color: var(--paper-2);
  padding: 8px 14px; border-radius: 8px; font-weight: 600;
}

.post-meta {
  display: flex; gap: 14px; align-items: center;
  font-size: 12.5px; color: var(--ink-mute);
  margin-top: 16px; margin-bottom: 28px;
  flex-wrap: wrap;
}
.post-meta .tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--forest); background: rgba(46,58,46,0.07);
  padding: 4px 9px; border-radius: 4px; font-weight: 500;
}

.author {
  display: flex; gap: 12px; align-items: center;
  padding: 18px 0; margin: 32px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.author .avatar {
  width: 48px; height: 48px; border-radius: 50%;
  overflow: hidden; background: var(--forest);
  flex-shrink: 0;
}
.author .avatar img { width: 100%; height: 100%; object-fit: cover; }
.author .info { font-size: 13.5px; line-height: 1.4; }
.author .info .name { font-family: 'Inter Tight'; font-weight: 600; color: var(--ink); font-size: 14.5px; }
.author .info .role { color: var(--ink-mute); }

.cta-card {
  margin: 40px 0 0 0;
  padding: 28px 30px;
  background: var(--ink); color: var(--paper-2);
  border-radius: var(--radius);
}
.cta-card h3 {
  color: white; font-size: 22px; line-height: 1.2;
  margin-bottom: 6px; letter-spacing: -0.02em;
}
.cta-card p { color: rgba(255,255,255,0.78); margin: 0 0 18px 0; font-size: 14.5px; }
.cta-card .actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cta-card .btn {
  text-decoration: none; padding: 11px 18px;
  border-radius: 10px; font-weight: 600; font-size: 14px;
  display: inline-flex; align-items: center; gap: 6px;
}
.cta-card .primary { background: var(--paper-2); color: var(--ink); }
.cta-card .secondary {
  background: transparent; color: var(--paper-2);
  border: 1px solid rgba(255,255,255,0.22);
}

.related { margin-top: 48px; }
.related h3 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-mute); font-family: 'JetBrains Mono', monospace; font-weight: 500; margin-bottom: 14px; }
.related ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.related li a {
  display: block; padding: 14px 18px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none; color: var(--ink);
  font-family: 'Inter Tight'; font-weight: 600; font-size: 14.5px;
  letter-spacing: -0.01em;
}
.related li a:hover { border-color: var(--forest-2); color: var(--forest); }

footer {
  margin-top: 48px; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--ink-mute); flex-wrap: wrap; gap: 10px;
}
footer a { color: var(--ink-soft); text-decoration: none; }
footer a:hover { color: var(--ink); }

/* Blog index */
.post-list { display: grid; gap: 14px; margin-top: 32px; }
.post-list .card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 28px;
  text-decoration: none; color: inherit;
  display: block;
}
.post-list .card:hover { border-color: var(--forest-2); }
.post-list .card .meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--forest); font-weight: 500; margin-bottom: 8px;
}
.post-list .card h2 {
  margin: 0 0 8px 0; font-size: 22px; letter-spacing: -0.02em;
}
.post-list .card p { margin: 0; color: var(--ink-soft); font-size: 14.5px; line-height: 1.5; }