body{margin:0;font-family:Sarabun,Tahoma,sans-serif;background:#f4f7fb;color:#102a43;font-size:18px}.header{background:#073b63;color:#fff;padding:16px 22px;font-weight:800}.container{max-width:900px;margin:28px auto;padding:0 18px}.card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 8px 28px rgba(0,0,0,.07);border:1px solid #e5edf5}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.full{grid-column:1/-1}label{display:block;font-weight:700;margin:12px 0 6px}input,select,textarea{width:100%;box-sizing:border-box;font-family:Sarabun,Tahoma,sans-serif;font-size:18px;padding:12px;border:1px solid #d5dee8;border-radius:10px}textarea{min-height:110px}button,.btn{display:inline-block;background:#0b67c2;color:#fff!important;border:0;border-radius:10px;padding:12px 18px;text-decoration:none;font-weight:700;font-family:Sarabun,Tahoma,sans-serif;font-size:17px;cursor:pointer}.alert{padding:12px;border-radius:10px;margin:12px 0}.success{background:#e8f8ef;color:#146c2e}.error{background:#fdecec;color:#9b1c1c}@media(max-width:700px){.grid{grid-template-columns:1fr}.full{grid-column:auto}}