*{box-sizing:border-box;font-family:Inter,system-ui,Segoe UI,Roboto,'Helvetica Neue',Arial}
body{background:#f6f9fb;color:#0b1220;padding:24px}
.container{max-width:780px;margin:0 auto;background:#fff;padding:20px;border-radius:8px;box-shadow:0 6px 18px rgba(9,30,66,0.08)}
.logo{max-width:200px;height:auto;display:block;margin:0 auto 16px}
h1{font-size:20px;margin-bottom:12px}
label{display:block;margin-top:12px;font-weight:600}
textarea,input,select{width:100%;padding:8px;margin-top:6px;border:1px solid #e6eef5;border-radius:6px}
button{margin-top:12px;padding:10px 14px;background:#0b5fff;color:white;border:none;border-radius:6px;cursor:pointer}
.result{margin-top:18px}
pre{background:#0f1724;color:#e6eef5;padding:12px;border-radius:6px;overflow:auto}