:root{--bg:#0b1020;--panel:#131a30;--muted:#8b96b8;--text:#eef2ff;--accent:#10b981;--danger:#ef4444}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:radial-gradient(circle at 20% 20%,#19203a,var(--bg));color:var(--text)}main{max-width:1100px;margin:0 auto;padding:24px}.card{background:linear-gradient(180deg,#1a2340,var(--panel));border:1px solid #2a355b;border-radius:14px;padding:16px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}@media (max-width:900px){.grid-2,.grid-3{grid-template-columns:1fr}}label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}button,input,select,textarea{width:100%;border-radius:10px;border:1px solid #31406d;background:#0f1730;color:var(--text);padding:10px 12px}textarea{min-height:88px;resize:vertical}button{cursor:pointer;background:linear-gradient(180deg,#12b981,#0d9f6f);border:none;font-weight:600}button.secondary{background:#1e2a4c;border:1px solid #324677}button.danger{background:var(--danger)}small{color:var(--muted)}.code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:#0b1329;border:1px solid #233054;border-radius:10px;padding:10px;overflow:auto}