:root{color-scheme:light;--color-bg:#f5f6f8;--color-surface:#fff;--color-border:#e2e4e9;--color-text:#1b1e23;--color-muted:#6b7280;--color-primary:#c0392b;--color-primary-dark:#962d22}*{box-sizing:border-box}body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}a{color:inherit}button{font-family:inherit;cursor:pointer}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;padding:24px}.btn-primary{background:var(--color-primary);color:#fff;border:none;border-radius:6px;padding:10px 18px;font-size:14px;font-weight:600}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:transparent;color:var(--color-text);padding:10px 18px}.btn-secondary,input,select{border:1px solid var(--color-border);border-radius:6px;font-size:14px}input,select{padding:10px 12px;width:100%}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:10px 12px;border-bottom:1px solid var(--color-border);font-size:14px}th{color:var(--color-muted);font-weight:600;text-transform:uppercase;font-size:12px}