.chem-b9{max-width:900px;margin:28px auto;padding:0 16px;font-family:Arial,sans-serif}.chem-b9 h2{font-size:29px;margin-bottom:8px}.chem-b9-card{border:1px solid #ddd;border-radius:14px;padding:24px;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06)}.chem-b9-q{font-size:19px;font-weight:600;line-height:1.6;margin-bottom:18px}.chem-b9 input{width:100%;box-sizing:border-box;padding:12px;border:1px solid #bbb;border-radius:8px;font-size:16px}.chem-b9-buttons{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}.chem-b9 button{padding:11px 17px;border:0;border-radius:8px;font-weight:700;cursor:pointer}.chem-b9-check{background:#222;color:#fff}.chem-b9-new{background:#eee}.chem-b9-f{margin-top:18px;padding:15px;border-radius:10px;display:none;line-height:1.55}.chem-b9-ok{display:block;background:#eaf7ee;border:1px solid #9fd4ae}.chem-b9-no{display:block;background:#fff1f1;border:1px solid #e2aaaa}