:root{
  --brand-soft:#F6EEDC;
  --ink:#1B1E24; --ink-2:#4A4844; --muted:#6E6A63; --line:#E3DDD3; --bg:#F5F2EC; --card:#fff;
  --brand:#0E1726; --brand-2:#9A7432; --accent:#D4AF6A; --accent-soft:#F6EEDC;
  --ok:#17803d; --ok-soft:#e6f6ec; --warn:#b45309; --warn-soft:#fff3e0; --bad:#b42318; --bad-soft:#fdecea;
  --radius:14px; --shadow:0 1px 2px rgba(20,33,61,.06),0 6px 20px rgba(20,33,61,.06);
  --font:"IBM Plex Sans Thai","Noto Sans Thai","Sarabun",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.75;font-size:17px}
a{color:var(--brand-2)}
img,svg{max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
.narrow{max-width:760px}

/* header */
.site-head{background:var(--brand);color:#fff;position:sticky;top:0;z-index:20}
.site-head .wrap{display:flex;align-items:center;gap:18px;min-height:60px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:19px}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--accent);display:grid;place-items:center;color:var(--brand);font-weight:800}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{color:#C9CFDA;text-decoration:none;padding:8px 10px;border-radius:8px;font-size:15px}
.nav a:hover,.nav a[aria-current=page]{background:rgba(255,255,255,.12);color:#fff}

/* hero */
.hero{background:linear-gradient(160deg,#0E1726 0%,#1A2740 100%);color:#fff;padding:44px 0 56px}
.hero h1{font-size:clamp(26px,4.4vw,40px);line-height:1.3;margin:0 0 12px}
.hero p{color:#C9CFDA;max-width:640px;margin:0 0 22px;font-size:18px}
.crumbs{font-size:14px;color:var(--muted);margin:18px 0 0}
.crumbs a{color:var(--muted)}
.hero .crumbs,.hero .crumbs a{color:#A9B3C2}

.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.tool-card{display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit;transition:transform .15s}
.tool-card:hover{transform:translateY(-2px)}
.tool-card .ico{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);display:grid;place-items:center;font-size:22px}
.tool-card h3{margin:4px 0 0;font-size:19px;line-height:1.4}
.tool-card p{margin:0;color:var(--ink-2);font-size:15px}
.tool-card .go{margin-top:auto;font-weight:600;color:var(--brand-2);font-size:15px}
.hero .grid{margin-top:8px}

main{padding:28px 0 56px}
section{margin:0 0 36px}
h1,h2,h3{line-height:1.35}
h2{font-size:clamp(21px,3vw,26px);margin:34px 0 12px}
h3{font-size:19px;margin:24px 0 8px}

/* tool form */
.tool{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:20px;align-items:start}
@media (max-width:860px){.tool{grid-template-columns:1fr}}
.field{margin:0 0 18px}
.field>label,.field>.lab{display:block;font-weight:600;margin:0 0 8px}
.hint{font-size:14px;color:var(--muted);margin:4px 0 0}
.seg{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:8px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label{display:block;border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;cursor:pointer;background:#fff;font-size:15px;line-height:1.45}
.seg label small{display:block;color:var(--muted);font-size:13px}
.seg input:checked+label{border-color:var(--brand-2);background:#F6EEDC;box-shadow:inset 0 0 0 1px var(--brand-2)}
.seg input:focus-visible+label{outline:3px solid var(--accent);outline-offset:2px}
input[type=number],input[type=text],select{width:100%;font:inherit;font-size:16px;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:none;border-color:var(--brand-2)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:700;font-size:17px;border:0;border-radius:12px;padding:13px 22px;cursor:pointer;background:var(--accent);color:#0E1726;text-decoration:none}
.btn:hover{filter:brightness(.96)}
.btn.block{width:100%}
.btn.ghost{background:#fff;border:1.5px solid var(--line);color:var(--ink)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;margin:6px 0}
.check input{margin-top:6px;width:18px;height:18px;flex:0 0 auto}

/* result */
.result{position:sticky;top:76px}
.result .placeholder{color:var(--muted);text-align:center;padding:40px 10px}
.verdict{border-radius:12px;padding:14px 16px;margin:0 0 14px;font-weight:600}
.verdict.ok{background:var(--ok-soft);color:var(--ok)}
.verdict.warn{background:var(--warn-soft);color:var(--warn)}
.verdict.bad{background:var(--bad-soft);color:var(--bad)}
.big{font-size:clamp(34px,6vw,48px);font-weight:800;line-height:1.1;color:var(--brand)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:15px;margin:10px 0}
.kv dt{color:var(--muted)}
.kv dd{margin:0;font-weight:600}
.list{padding-left:20px;margin:8px 0}
.list li{margin:4px 0}
.ref{font-size:13px;color:var(--muted);border-top:1px dashed var(--line);margin-top:14px;padding-top:10px}
.pill{display:inline-block;font-size:13px;font-weight:600;padding:2px 10px;border-radius:99px;background:#F6EEDC;color:var(--brand-2);margin:0 4px 4px 0}
.pill.ok{background:var(--ok-soft);color:var(--ok)}.pill.bad{background:var(--bad-soft);color:var(--bad)}.pill.warn{background:var(--warn-soft);color:var(--warn)}
.diagram{background:#FBF9F5;border:1px solid var(--line);border-radius:12px;margin:0 0 14px}
table.mat{width:100%;border-collapse:collapse;font-size:15px}
table.mat th,table.mat td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:middle}
table.mat td input{padding:7px 8px}
.meter{height:14px;border-radius:99px;background:#ECE6DB;overflow:hidden;margin:8px 0 4px}
.meter>span{display:block;height:100%;border-radius:99px;background:var(--ok);transition:width .3s}

/* article */
.prose{font-size:18px}
.prose p{margin:0 0 16px}
.prose table{border-collapse:collapse;width:100%;margin:12px 0 20px;font-size:16px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.prose th{background:#F6EEDC}
.prose blockquote{margin:16px 0;padding:12px 16px;background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:8px}
.prose blockquote p{margin:0}
.prose ul,.prose ol{padding-left:24px}
.meta{color:var(--muted);font-size:15px}
.cta-box{background:#F6EEDC;border:1px solid #E8D9B8;border-radius:var(--radius);padding:18px 20px;margin:24px 0}
.cta-box strong{display:block;font-size:18px;margin-bottom:6px}
.post-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.post-list a{text-decoration:none;color:inherit;display:block}
.post-list h3{margin:0 0 4px;color:var(--brand)}
.post-list p{margin:0;color:var(--ink-2);font-size:15px}
.toc{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 18px;font-size:15px;margin:0 0 20px}
.toc ol{margin:6px 0 0;padding-left:20px}

.ad-slot{margin:24px 0;min-height:100px;text-align:center}
.ad-slot::before{content:"โฆษณา";display:block;font-size:11px;color:#a0a7b6;letter-spacing:.05em}

.disclaimer{font-size:14px;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:10px;padding:12px 14px;margin:16px 0}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:0 0 10px}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:8px 0 0}

footer.site-foot{background:#0E1726;color:#b7c1d6;padding:32px 0;font-size:15px}
footer.site-foot a{color:#C9CFDA}
footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
footer h4{color:#fff;margin:0 0 8px;font-size:16px}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin:4px 0}

.consent{position:fixed;left:12px;right:12px;bottom:12px;max-width:640px;margin:0 auto;background:#fff;border:1px solid var(--line);box-shadow:0 8px 30px rgba(0,0,0,.18);border-radius:14px;padding:14px 16px;font-size:14px;z-index:50;display:none}
.consent.show{display:block}
.consent .acts{display:flex;gap:8px;margin-top:10px;justify-content:flex-end}
.consent .btn{font-size:15px;padding:9px 16px}
@media print{.site-head,.site-foot,.ad-slot,.consent{display:none}}
.hero .tool-card{color:var(--ink)}
.hero .tool-card p{color:var(--ink-2);font-size:15px;margin:0}
@media (max-width:700px){
  .site-head{position:static}
  .site-head .wrap{gap:6px;padding-top:8px;padding-bottom:4px}
  .nav{flex-wrap:nowrap;overflow-x:auto;width:100%;margin-left:0;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}
  .nav a{white-space:nowrap}
  .result{position:static}
}

/* merged-site additions */
h1,h2,h3,.logo{font-family:"Noto Serif Thai",var(--font)}
.hero h1{color:#F1ECE2}
.hero{border-bottom:2px solid var(--accent)}
.nav a.cta-link{background:var(--accent);color:#0E1726;font-weight:600}
.nav a.cta-link:hover{background:#E2C287;color:#0E1726}
.post-list .tag{display:inline-block;font-size:12px;font-weight:600;color:var(--brand-2);border:1px solid #E8D9B8;border-radius:99px;padding:0 10px;margin-bottom:6px}