:root{--blue:#005EB8;--dark:#003087;--bg:#f4f8fb;--line:#d8dde0;--ink:#0f172a}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink)}.wrap{max-width:1180px;margin:auto;padding:14px}.hero{background:linear-gradient(120deg,var(--blue),var(--dark));color:white;border-radius:24px;padding:24px}.card{background:white;border:1px solid var(--line);border-radius:20px;padding:18px;margin-top:14px}.blue{background:#e8f1fb}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.adminGrid{display:grid;grid-template-columns:1fr 390px;gap:14px}.btn,.choice{border:1px solid var(--line);border-radius:16px;background:white;padding:14px;font-weight:800;cursor:pointer}.primary{background:linear-gradient(180deg,var(--blue),var(--dark));color:white;border:0}.tab{border:1px solid #ffffff55;background:#ffffff1a;color:white;border-radius:999px;padding:.6rem .9rem;font-weight:800;cursor:pointer}input,select,textarea{width:100%;font-size:16px;border:1px solid var(--line);border-radius:12px;padding:.8rem}.mt{margin-top:1rem}.code{font-size:clamp(2rem,6vw,4rem);font-weight:900;color:var(--dark)}.previewFrame{width:100%;height:560px;border:1px solid var(--line);border-radius:18px}.bar{height:22px;border-radius:999px;background:#e5edf5;overflow:hidden}.fill{height:100%;background:#005EB8}pre{white-space:pre-wrap;overflow:auto;background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:12px}@media(max-width:900px){.grid,.adminGrid{grid-template-columns:1fr}}