:root{--background:#f6f7f9;--surface:#fff;--surface-muted:#eef1f4;--text:#17202a;--muted:#697483;--border:#dce2e8;--accent:#0f766e;--accent-dark:#115e59;--danger:#b42318;--shadow:0 10px 28px #17202a14}*{box-sizing:border-box}html{background:var(--background);min-height:100%}body{background:var(--background);min-height:100%;color:var(--text);margin:0;font-family:Arial,Helvetica,sans-serif}button,input,select,textarea{font:inherit}button{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:6px;min-height:36px;padding:0 12px;font-size:.875rem;font-weight:700}button:hover:not(:disabled){border-color:var(--accent);color:var(--accent-dark)}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #0f766e38}input{border:1px solid var(--border);background:var(--surface);min-height:40px;color:var(--text);border-radius:6px;padding:0 12px}textarea{resize:vertical;border:1px solid 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