:root{
  --border:#d8d8d8;
  --text:#111;
  --muted:#666;
  --okbg:#eafff2;
  --okbd:#b8f0cd;
  --erbg:#fff1f1;
  --erbd:#f3b7b7;
}

body{
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text);
  background:#fff;
  margin:0;
}

.wrap{max-width:900px;margin:36px auto;padding:0 16px}
.sheet{border:1px solid var(--border);border-radius:14px;padding:28px}

.top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px; width:100%;}
.brand{font-weight:800;font-size:28px;line-height:1.1; display:none;}
.brand small{display:block;font-weight:600;color:var(--muted);font-size:14px;margin-top:6px}
.version{color:var(--muted);font-weight:600}

.logoDech {max-width:100%; width: 900px; height: auto; margin:auto}

h1{margin:24px 0 22px;text-align:center;letter-spacing:.6px}

.grid{display:grid;grid-template-columns:1fr;gap:14px}
.row{display:grid;grid-template-columns:320px 1fr;gap:14px;align-items:start}

label{font-weight:700}
input, textarea{
  width:100%;
  box-sizing:border-box;
  padding:11px 12px;
  border:1px solid var(--border);
  border-radius:10px;
  font-size:16px;
  background:#efefef;
}
textarea{min-height:84px;resize:vertical}

.hint{color:var(--muted);font-size:13px;margin-top:6px}

.actions{display:flex;gap:12px;justify-content:center;margin-top:20px}
button{
  padding:12px 18px;border:0;border-radius:12px;
  background:#111;color:#fff;font-size:16px;cursor:pointer
}
button[disabled]{opacity:.6;cursor:not-allowed}

#retourSite { background:#adbb5c; color:#333;
  padding:12px 18px;border:0;border-radius:12px;
  font-size:16px;cursor:pointer;
}

.note{margin-top:22px;text-align:center;color:var(--muted);font-weight:600}

.ok{background:var(--okbg);border:1px solid var(--okbd);padding:12px;border-radius:12px;margin-bottom:14px}
.err{background:var(--erbg);border:1px solid var(--erbd);padding:12px;border-radius:12px;margin-bottom:14px}

.hp{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}

@media (max-width:720px){
  .row{grid-template-columns:1fr}
  .brand{font-size:22px}
}