:root {
  --bg: #0b1220;
  --surface: #121a2b;
  --text: #e8eefc;
  --muted: #9aa8c7;
  --accent: #6ee7b7;
  --accent-2: #93c5fd;
  --border: rgba(255,255,255,0.08);
  --max: 42rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans Thai", system-ui, -apple-system, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, #163057 0%, transparent 55%), var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 1.05rem;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: min(100% - 2rem, 52rem); margin: 0 auto; }
.site-header, .site-footer {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}
.site-footer { border-bottom: 0; border-top: 1px solid var(--border); margin-top: 3rem; padding: 2rem 0; color: var(--muted); font-size: 0.95rem; }

.nav { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; justify-content: space-between; }
.brand { font-weight: 700; color: var(--text); font-size: 1.15rem; }
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 1rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); }

.hero { padding: 2.5rem 0 1.5rem; }
.hero h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); line-height: 1.3; margin: 0 0 0.75rem; }
.hero p { color: var(--muted); margin: 0; max-width: 36rem; }

.post-list { display: grid; gap: 1rem; padding: 0 0 2rem; }
.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.35rem;
}
.post-card h2 { margin: 0.2rem 0 0.5rem; font-size: 1.25rem; line-height: 1.4; }
.post-card h2 a { color: var(--text); }
.post-card .meta { color: var(--muted); font-size: 0.9rem; }
.post-card .excerpt { margin: 0.6rem 0 0; color: #c9d4ef; }

.tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.75rem; }
.tag {
  font-size: 0.78rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  color: var(--muted);
}

article.post { padding: 1.5rem 0 3rem; }
article.post .meta { color: var(--muted); margin-bottom: 1.5rem; }
article.post h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  line-height: 1.3;
  margin: 0 0 0.75rem;
  max-width: var(--max);
}
.prose { max-width: var(--max); }
.prose h2 { margin-top: 2.2rem; font-size: 1.35rem; line-height: 1.35; }
.prose h3 { margin-top: 1.6rem; font-size: 1.15rem; }
.prose p, .prose li { color: #d7e0f5; }
.prose ul { padding-left: 1.2rem; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }
.prose strong { color: #fff; }
.footnote { color: var(--muted); font-size: 0.92rem; }

.about { padding: 2rem 0 3rem; max-width: var(--max); }