:root{--bg: #f5f7fb;--card: #ffffff;--muted: #6b7280;--accent: #2563eb}*{box-sizing:border-box}body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;margin:0;padding:0;background:var(--bg);color:#111827}.container{max-width:90%;margin:36px auto;padding:20px;background:transparent}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.card{background:var(--card);padding:16px;border-radius:8px;box-shadow:0 6px 18px #0d263b0f}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:16px}.button{background:var(--accent);color:#fff;padding:8px 12px;border-radius:6px;border:none;cursor:pointer}.button:disabled{background-color:var(--muted);cursor:not-allowed}.small{font-size:14px;color:var(--muted)}