:root{
  --glg-green:#0a8f64;
  --glg-mint:#10b981;
  --ink:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --bg:#ffffff;
  --accent:#f0fdf4;
  --sans:"Inter","Kanit",ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:var(--sans)}
.doc{max-width:940px;margin:28px auto;padding:28px;border:1px solid var(--border);border-radius:16px;background:#fff;box-shadow:0 8px 28px rgba(0,0,0,.05)}
.header{display:flex;gap:16px;align-items:center;padding-bottom:12px;border-bottom:2px solid var(--border);margin-bottom:14px}
.header img{height:56px}
.h1{margin:0;font-weight:800;color:var(--glg-green);font-size:22px}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;background:var(--accent);color:var(--glg-green);font-weight:700;border:1px solid #bbf7d0;margin:6px 0}
.kv{display:grid;grid-template-columns:220px 1fr;gap:6px}
.box{border:1px solid var(--border);border-radius:12px;padding:12px;margin:12px 0}
.table{width:100%;border-collapse:collapse;margin-top:8px}
.table th,.table td{border:1px solid var(--border);padding:8px;vertical-align:top;font-size:14px}
.table th{background:#f9fafb;text-align:left}
.sig{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:18px}
.sig .pad{height:90px;border:1px dashed var(--border);border-radius:12px;background:#fafafa;display:flex;align-items:center;justify-content:center;position:relative}
.sig .pad img{max-height:70px;max-width:100%;object-fit:contain;opacity:.9}
.sig .label{font-size:12px;color:var(--muted);margin-top:6px}
.footer{display:flex;justify-content:space-between;align-items:flex-end;margin-top:22px;font-size:12px;color:var(--muted)}
.lang-toggle{display:flex;gap:6px;justify-content:flex-end;margin:4px 0 8px}
.lang-toggle button{border:1px solid var(--border);background:#fff;border-radius:999px;padding:6px 10px;cursor:pointer}
.lang-toggle button.active{background:var(--glg-mint);border-color:var(--glg-mint);color:#fff}
[data-lang="en"]{display:none}
.lang-en [data-lang="th"]{display:none}
.lang-en [data-lang="en"]{display:initial}
.watermark{position:fixed;inset:0;pointer-events:none;opacity:.05;background:url('../img/logo.png') center/420px no-repeat}
.small{font-size:12px;color:var(--muted)}
hr{border:none;border-top:1px solid var(--border);margin:12px 0}