*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;background:#f7f9fc;color:#222}
.top{background:#ffffff;color:#111;padding:18px 20px;border-bottom:1px solid #e6e9ef}.brand{font-weight:700;letter-spacing:.2px}
.nav{margin-top:10px}
.nav a{margin-right:12px;color:#111;text-decoration:none;padding:6px 8px;border-radius:6px}
.nav a:hover{background:#f0f2f7}
.container{max-width:1000px;margin:28px auto;padding:0 20px}
.hero{padding:18px 0 6px 0;color:#667085}
.foot{margin-top:40px;padding:18px;color:#667085;text-align:center;border-top:1px solid #e6e9ef;background:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.card{background:#fff;border:1px solid #e6e9ef;border-radius:14px;padding:18px;box-shadow:0 6px 16px rgba(17,24,39,.06)}
.card .name{font-size:18px;font-weight:600;margin-bottom:6px;color:#111}
.card .price{color:#0ea5a6;margin-bottom:8px}
.btn{display:inline-block;background:#111;color:#fff;text-decoration:none;padding:10px 14px;border-radius:8px;font-weight:600}
form{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}
input,select,textarea,button{padding:10px;border:1px solid #d0d5dd;border-radius:8px;background:#fff;color:#222}
input::placeholder,textarea::placeholder{color:#98a2b3}
button{background:#111;color:#fff;border:0;font-weight:700}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #e6e9ef}
th,td{border-bottom:1px solid #e6e9ef;padding:10px;text-align:left}
.admin-shell{display:grid;grid-template-columns:240px 1fr;gap:18px}
.admin-side{background:#fff;border:1px solid #e6e9ef;border-radius:14px;padding:12px}
.admin-side a{display:block;color:#222;text-decoration:none;padding:8px 10px;border-radius:8px;margin-bottom:4px}
.admin-side a:hover{background:#f0f2f7}
.admin-main{background:transparent}
.buy .name{font-size:20px;font-weight:700}
.alert{background:#fff4e5;border:1px solid #f6c359;border-radius:10px;padding:8px 12px;color:#8a5a12}
.links{margin-top:16px}
.codes{list-style:none;padding:0} 
.codes li{background:#fff;border:1px dashed #d0d5dd;border-radius:8px;padding:10px;margin:6px 0}
.inline{display:inline-flex;gap:6px}
.tips{color:#667085;margin-top:8px}
.btn-sm{padding:6px 10px;font-size:12px}
.btn-group{display:flex;gap:8px;flex-wrap:wrap}
td,th{vertical-align:middle}
.label-ok{display:inline-block;color:#0ea5a6}
.label-warn{display:inline-block;color:#dc6b2f}
.modal{position:fixed;inset:0;background:rgba(17,24,39,.35);display:flex;align-items:center;justify-content:center;z-index:1000}
.modal-content{background:#fff;border:1px solid #e6e9ef;border-radius:14px;padding:16px;min-width:360px;box-shadow:0 12px 28px rgba(17,24,39,.18)}
.modal-content h3{margin:0 0 10px 0}
.check-grid{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.check-item{display:flex;align-items:center;gap:6px;padding:6px 8px;border:1px solid #e6e9ef;border-radius:8px;background:#fff}