:root{
  --bg:#f4f7fb;
  --card:#ffffff;
  --ink:#1f2a37;
  --muted:#5b6b7b;
  --line:#e2e8f0;
  --primary:#0b6e99;
  --primary-dark:#085a7d;
  --accent:#f0a500;
  --accent-dark:#d18f00;
  --footer:#132733;
  --radius:12px;
  --shadow:0 1px 3px rgba(15,40,60,.08),0 8px 24px rgba(15,40,60,.06);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans Thai","Tahoma",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
}
img{max-width:100%;height:auto;border-radius:8px}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark);text-decoration:underline}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* top bar */
.topbar{background:#0b2b3b;color:#cfe3ee;font-size:13px}
.topbar-inner{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:6px;padding:7px 20px}
.topbar a{color:#eaf6fd;text-decoration:none}
.topbar a:hover{color:#fff;text-decoration:underline}
.topbar-contact span{margin-right:16px}
.topbar-links a{margin-left:12px}
@media(max-width:760px){.topbar-links{display:none}}

/* header / nav */
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px}
.brand{display:flex;flex-direction:column;line-height:1.3;text-decoration:none!important}
.brand-name{font-size:20px;font-weight:800;color:var(--primary-dark)}
.brand-tag{font-size:12px;color:var(--muted)}
.main-nav{display:flex;flex-wrap:wrap;gap:4px}
.main-nav a{
  color:var(--ink);padding:7px 12px;border-radius:999px;font-size:15px;white-space:nowrap;
}
.main-nav a:hover{background:#eaf3f9;color:var(--primary-dark);text-decoration:none}
.main-nav a.active{background:var(--primary);color:#fff}
.nav-toggle{position:absolute;opacity:0;pointer-events:none}
.nav-hamburger{display:none;cursor:pointer;padding:8px 2px}
.nav-hamburger span{display:block;width:24px;height:3px;background:var(--primary-dark);margin:5px 0;border-radius:2px}
@media(max-width:900px){
  .nav-hamburger{display:block}
  .main-nav{display:none;width:100%;flex-direction:column;padding:8px 0;border-top:1px solid var(--line)}
  .main-nav a{white-space:normal;border-radius:10px}
  .nav-toggle:checked ~ .main-nav{display:flex}
}

/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;padding:28px 20px 44px}
@media(max-width:960px){.layout{grid-template-columns:1fr}}
.content{min-width:0}
.crumbs{font-size:13px;color:var(--muted);margin:2px 0 10px}
.crumbs a{color:var(--muted)}
.crumbs span{margin:0 6px;color:#b3c0cc}

.entry{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 32px 36px;box-shadow:var(--shadow)}
@media(max-width:560px){.entry{padding:18px}}
.page-title{margin:0 0 6px;font-size:30px;line-height:1.4;color:var(--primary-dark)}
@media(max-width:560px){.page-title{font-size:23px}}
.entry-body{margin-top:14px}
.entry-body h2,.entry-body h3,.entry-body h4{line-height:1.5;color:#12303f;margin:1.5em 0 .5em}
.entry-body h2{border-bottom:2px solid var(--line);padding-bottom:.35em}
.entry-body p{margin:1em 0}
.entry-body ul,.entry-body ol{margin:1em 0;padding-left:1.4em}
.entry-body li{margin:.35em 0}
.entry-body blockquote{
  margin:1.5em 0;padding:14px 20px;border-left:5px solid var(--accent);
  background:#fff8e6;border-radius:0 8px 8px 0;font-style:italic;color:#5a4a1a;
}
.entry-body table{border-collapse:collapse;width:100%;margin:1.2em 0}
.entry-body th{background:#eef4f8;text-align:left}
.entry-body th,.entry-body td{border:1px solid var(--line);padding:8px 12px;vertical-align:top}
.entry-body hr{border:0;border-top:1px solid var(--line);margin:1.6em 0}
.entry-body img{display:block;margin:1.2em auto}
.entry-body a[href^="mailto"]{word-break:break-all}
.entry-body a[target="_blank"]::after{content:"\2197";font-size:.8em;margin-left:3px;opacity:.6}

.cat-badge{margin-top:22px;font-size:14px;color:var(--muted)}
.cta{
  margin-top:26px;padding:16px 20px;background:#eaf3f9;border:1px solid #cfe3ee;
  border-radius:10px;font-size:16px;
}

/* sidebar */
.sidebar{min-width:0}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;margin-bottom:20px;box-shadow:var(--shadow);
}
.card-title{font-size:17px;margin:0 0 10px;color:var(--primary-dark);border-bottom:2px solid var(--line);padding-bottom:8px}
.svc-list{list-style:none;margin:0;padding:0}
.svc-list li{padding:6px 0;border-bottom:1px dashed #edf2f7}
.svc-list li:last-child{border-bottom:0}
.svc-list li.on a{font-weight:700;color:var(--primary-dark)}
.contact-list{list-style:none;margin:0 0 12px;padding:0;font-size:15px}
.contact-list li{margin:7px 0}
.contact-list span{color:var(--muted);display:inline-block;min-width:46px}
.btn{
  display:inline-block;background:var(--accent);color:#3a2c00;font-weight:700;
  padding:10px 18px;border-radius:999px;text-decoration:none;
}
.btn:hover{background:var(--accent-dark);color:#3a2c00;text-decoration:none}

/* categories list */
.cat-list{list-style:none;margin:0;padding:0}
.cat-list li{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin-bottom:14px}
.cat-list h2{margin:0 0 4px;font-size:19px}
.cat-list p{margin:0;color:var(--muted)}

/* footer */
.site-footer{background:var(--footer);color:#c7d6e0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:26px;padding:38px 20px 26px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}
.f-brand{font-size:19px;font-weight:800;color:#fff;margin-bottom:8px}
.f-col h2{font-size:15px;color:#fff;margin:0 0 10px}
.f-col ul{list-style:none;margin:0;padding:0}
.f-col li{margin:5px 0}
.f-col a{color:#c7d6e0}
.f-col a:hover{color:#fff;text-decoration:underline}
.f-col p{margin:.4em 0}
.footer-bottom{background:#0d1f2a;color:#8fa5b2;font-size:13px;padding:12px 0;text-align:center}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;z-index:100}
.skip-link:focus{left:0}