body{font-family:system-ui;background:#f8fafc;margin:0;padding:16px}
header{text-align:center}
h1{color:#0f172a}
.tag{color:#06B6D4}
.card{background:#fff;padding:16px;margin:16px auto;max-width:500px;border-radius:12px;box-shadow:0 6px 16px rgba(0,0,0,.08)}
input,textarea,button{width:100%;margin-top:8px;padding:10px;border-radius:8px;border:1px solid #cbd5e1}
button{background:#06B6D4;color:#fff;border:none;font-weight:600}
.admin{border:2px dashed #06B6D4}
footer{text-align:center;color:#475569;margin-top:24px}
.profit{color:#16a34a;font-weight:600}