:root{color-scheme:light}body,html{padding:0;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;max-width:900px;margin:40px auto;padding:0 16px;line-height:1.6;background-image:url(/image1.png);background-size:cover;background-position:50%;background-attachment:fixed}body:before{content:"";position:fixed;inset:0;background:hsla(0,0%,100%,.6);z-index:-1}h1{margin-bottom:4px}.hint{color:#666;font-size:.92em;margin:0 0 18px}label{display:block;margin:14px 0 6px}input,select,textarea{width:100%;padding:10px;border:1px solid #ccc;border-radius:10px}textarea{min-height:180px;resize:vertical}.row{display:grid;grid-gap:12px;gap:12px;grid-template-columns:1fr 1fr}@media (max-width:640px){.row{grid-template-columns:1fr}}button{margin-top:18px;padding:12px 18px;border:none;border-radius:12px;cursor:pointer;background:#111;color:#fff}.error{color:#b00020;font-size:.9em;margin-top:8px}.error,.hide{display:none}.center{text-align:center}button[disabled]{opacity:.6;cursor:not-allowed}