:root{
  --bg:#f7f8fa; --card:#fff; --ink:#161b22; --muted:#5b6572; --line:#e3e7ec;
  --brand:#1f6feb; --brand-ink:#fff; --ok:#1a7f37; --warn:#9a6700; --bad:#b42318;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px rgba(16,24,40,.06);
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#0e1116; --card:#161b22; --ink:#e6edf3; --muted:#9aa4b2; --line:#262c36;
         --brand:#4c8dfd; --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35); }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Thai","Sarabun",sans-serif;}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
header.site{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--card) 92%,transparent);
  backdrop-filter:saturate(1.6) blur(8px);border-bottom:1px solid var(--line)}
header.site .row{display:flex;align-items:center;gap:18px;height:60px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;letter-spacing:-.2px;color:var(--ink)}
.logo span{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--brand);color:#fff;font-size:14px}
nav.top{margin-left:auto;display:flex;gap:16px;font-size:15px}
.hero{padding:38px 0 10px}
.hero h1{margin:0 0 8px;font-size:clamp(26px,4.4vw,38px);line-height:1.25;letter-spacing:-.6px}
.hero p{margin:0;color:var(--muted);max-width:62ch}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:14px;margin:22px 0 8px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 16px 14px;box-shadow:var(--shadow);transition:transform .12s ease,border-color .12s}
.card:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--brand) 45%,var(--line));text-decoration:none}
.card h3{margin:0 0 5px;font-size:16.5px}
.card p{margin:0;font-size:13.5px;color:var(--muted)}
.badges{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.badge{font-size:11.5px;padding:2px 8px;border-radius:999px;background:color-mix(in srgb,var(--brand) 12%,transparent);color:var(--brand)}
.badge.soon{background:color-mix(in srgb,var(--warn) 16%,transparent);color:var(--warn)}
.badge.free{background:color-mix(in srgb,var(--ok) 14%,transparent);color:var(--ok)}
section.cat{margin:30px 0 4px} section.cat>h2{font-size:19px;margin:0 0 4px}
.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);margin:18px 0}
.tool h1{margin:0 0 6px;font-size:clamp(22px,3.4vw,29px)}
.tool .lede{color:var(--muted);margin:0 0 18px}
label{display:block;font-size:13.5px;font-weight:600;margin:14px 0 5px}
input[type=text],input[type=number],input[type=url],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);font:inherit}
textarea{min-height:130px;resize:vertical}
button{font:inherit;cursor:pointer;border:1px solid transparent;border-radius:10px;padding:10px 15px;
  background:var(--brand);color:var(--brand-ink);font-weight:650}
button.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
button:disabled{opacity:.55;cursor:not-allowed}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:end}
.row>*{flex:1 1 150px} .row>.tight{flex:0 0 auto}
.drop{border:2px dashed var(--line);border-radius:var(--radius);padding:26px;text-align:center;color:var(--muted);
  background:color-mix(in srgb,var(--bg) 60%,transparent)}
.drop.on{border-color:var(--brand);color:var(--brand)}
.out{margin-top:16px;padding:14px;border-radius:12px;border:1px solid var(--line);background:var(--bg);
  font-variant-numeric:tabular-nums;word-break:break-word;white-space:pre-wrap}
.out.ok{border-color:color-mix(in srgb,var(--ok) 45%,var(--line))}
.out.bad{border-color:color-mix(in srgb,var(--bad) 45%,var(--line))}
.stat{display:flex;gap:22px;flex-wrap:wrap;margin:6px 0 2px}
.stat div{min-width:96px} .stat b{display:block;font-size:21px} .stat small{color:var(--muted)}
.preview{max-width:100%;border-radius:12px;border:1px solid var(--line);margin-top:14px}
.prose{margin:26px 0 6px} .prose h2{font-size:20px;margin:22px 0 6px} .prose p{margin:0 0 12px;color:#39414d}
@media (prefers-color-scheme:dark){.prose p{color:var(--muted)}}
.ads{margin:22px 0;padding:14px;border:1px dashed var(--line);border-radius:12px;text-align:center;
  color:var(--muted);font-size:12.5px;letter-spacing:.3px;text-transform:uppercase}
footer.site{margin:44px 0 30px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
footer.site nav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:8px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
code{background:color-mix(in srgb,var(--ink) 8%,transparent);padding:1px 6px;border-radius:6px;font-size:.92em}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:14.5px}
th{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
tbody tr:last-child td{border-bottom:0}
@media (max-width:600px){ .grid{grid-template-columns:1fr} nav.top{gap:12px;font-size:14px} }