:root {
  --bg: #f7f8fa; --card: #fff; --text: #1a2332; --muted: #5b6b7c;
  --line: #e5e9ef; --accent: #0f766e; --accent-soft: #e6f4f2;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Sarabun", "Noto Sans Thai", "Segoe UI", Tahoma, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; font-size: 17px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 1rem; }
.muted { color: var(--muted); }
.site-header { background: #0f172a; color: #fff; position: sticky; top: 0; z-index: 10; }
.header-row { display: flex; align-items: center; gap: 1rem; padding: .7rem 1rem; }
.logo { color: #fff; font-weight: 700; font-size: 1.15rem; white-space: nowrap; }
.search { flex: 1; }
.search input { width: 100%; max-width: 420px; padding: .5rem .8rem; border-radius: 999px; border: 0; font: inherit; font-size: .95rem; }
.menu-toggle { display: none; background: none; border: 0; color: #fff; font-size: 1.5rem; cursor: pointer; }
.site-nav { background: #111c33; }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav > .wrap > ul { display: flex; flex-wrap: wrap; gap: .25rem; }
.site-nav li { position: relative; }
.site-nav a { display: block; color: #cbd5e1; padding: .55rem .8rem; font-size: .95rem; }
.site-nav li.active > a, .site-nav a:hover { color: #fff; text-decoration: none; }
.site-nav .sub { display: none; position: absolute; left: 0; top: 100%; min-width: 200px; background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.12); padding: .35rem 0; }
.site-nav .sub a { color: var(--text); }
.site-nav li:hover > .sub, .site-nav li:focus-within > .sub { display: block; }
.main { padding-top: 1.5rem; padding-bottom: 3rem; }
.hero { background: linear-gradient(135deg, #0f766e, #155e75); color: #fff; border-radius: 16px; padding: 2rem 1.5rem; margin-bottom: 1.5rem; }
.hero h1 { margin: 0 0 .4rem; }
.hero a { color: #fff; text-decoration: underline; }
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
.cat-card { display: flex; flex-direction: column; gap: .35rem; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1.1rem; color: var(--text); }
.cat-card:hover { border-color: var(--accent); text-decoration: none; }
.cat-card .icon { font-size: 1.8rem; }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chips em, .chips a { font-style: normal; font-size: .82rem; background: var(--accent-soft); color: var(--accent); padding: .1rem .6rem; border-radius: 999px; }
.post-list { display: grid; gap: .75rem; }
.post-item { display: flex; flex-direction: column; gap: .2rem; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.1rem; color: var(--text); }
.post-item:hover { border-color: var(--accent); text-decoration: none; }
.post-item .meta, .meta { font-size: .85rem; color: var(--muted); }
.tag { display: inline-block; background: #fef3c7; color: #92400e; font-size: .78rem; padding: 0 .5rem; border-radius: 999px; margin-right: .35rem; }
.crumbs { font-size: .9rem; color: var(--muted); margin-bottom: .75rem; }
.article { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1.5rem; }
.article h1 { margin-top: 0; line-height: 1.35; }
.content img, .content video, .content iframe { max-width: 100%; height: auto; }
.content pre { background: #0f172a; color: #e2e8f0; padding: 1rem; border-radius: 10px; overflow-x: auto; font-size: .9rem; }
.content code { background: #eef2f6; padding: .1rem .35rem; border-radius: 4px; font-size: .9em; }
.content pre code { background: none; padding: 0; }
.content table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
.content th, .content td { border: 1px solid var(--line); padding: .45rem .6rem; }
.support { margin-top: 1rem; background: var(--accent-soft); border-radius: 12px; padding: 1rem 1.2rem; }
.pager { display: flex; gap: .35rem; margin-top: 1.25rem; flex-wrap: wrap; }
.pager a { padding: .3rem .75rem; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.pager a.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.site-footer { border-top: 1px solid var(--line); padding: 1.5rem 0; color: var(--muted); font-size: .9rem; }
@media (max-width: 760px) {
  body { font-size: 16px; }
  .header-row { flex-wrap: wrap; }
  .search { order: 3; flex-basis: 100%; }
  .search input { max-width: none; }
  .menu-toggle { display: block; margin-left: auto; }
  .site-nav { display: none; }
  body.nav-open .site-nav { display: block; }
  .site-nav > .wrap > ul { flex-direction: column; }
  .site-nav .sub { display: block; position: static; background: none; border: 0; box-shadow: none; padding: 0 0 .3rem 1rem; }
  .site-nav .sub a { color: #94a3b8; padding: .3rem .8rem; }
  .article { padding: 1.1rem; }
  .hero { padding: 1.5rem 1.1rem; }
}