:root{
  --green:#1DB446; --green-d:#159b3a; --bg:#f4f6f8; --card:#fff;
  --text:#2b2b2b; --muted:#888; --line:#e6e8eb; --danger:#e04848; --warn:#f0a500;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI",Tahoma,"Sarabun",sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
a{color:var(--green);text-decoration:none}
.wrap{max-width:480px;margin:0 auto;padding:16px}
.wrap-wide{max-width:960px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:16px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.logo{display:block;width:120px;height:120px;border-radius:24px;margin:0 auto 12px;object-fit:cover}
h1{font-size:1.5rem;margin:.2em 0;text-align:center}
h2{font-size:1.15rem;margin:.4em 0}
.muted{color:var(--muted);font-size:.9rem}
.center{text-align:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:13px 16px;border:0;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;background:var(--green);color:#fff;transition:.15s}
.btn:hover{background:var(--green-d)}
.btn.line{background:#06C755}
.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
.btn.danger{background:var(--danger)}
.btn.warn{background:var(--warn)}
.btn.sm{width:auto;padding:7px 12px;font-size:.85rem;border-radius:9px}
.row{display:flex;gap:10px}
.row>*{flex:1}
.tag{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.78rem;font-weight:600}
.tag.green{background:#e3f6e8;color:var(--green-d)}
.tag.gray{background:#eceff1;color:#607d8b}
.tag.warn{background:#fff4d6;color:#a77b00}
.tag.danger{background:#fde4e4;color:#c62828}
.field{margin-bottom:14px}
.field label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:11px;border:1px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
th{color:var(--muted);font-weight:600;font-size:.8rem;text-transform:uppercase}
.qrbox{display:flex;justify-content:center;padding:16px;background:#fff;border-radius:12px}
.flash{background:#e3f6e8;color:var(--green-d);padding:10px 14px;border-radius:10px;margin-bottom:14px;font-size:.9rem}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.topbar .brand{font-weight:700;font-size:1.1rem}
.nav a{margin-left:14px;font-size:.9rem;color:var(--muted)}
.nav a.active{color:var(--green);font-weight:600}
.stat{display:flex;gap:12px;flex-wrap:wrap}
.stat .box{flex:1;min-width:120px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center}
.stat .box b{display:block;font-size:1.8rem;color:var(--green)}
.slip-img{max-width:100%;border-radius:10px;border:1px solid var(--line)}
.hidden{display:none}
#reader{width:100%;border-radius:12px;overflow:hidden}
.result{padding:20px;border-radius:12px;text-align:center;font-size:1.3rem;font-weight:700;margin-top:14px}
.result.ok{background:#e3f6e8;color:var(--green-d)}
.result.bad{background:#fde4e4;color:#c62828}